Langir: Your Dependable Momentary Switch Supplier from China

As the leading manufacturer based in China, Langir consistently provides the best quality of momentary switches like no other.

The Langir momentary switch is the most distinctive among the vast Langir push button switch family. We pride ourselves on its utmost reliability, optimum performance, and almost infinite service life. Whether it is the normally open (NO) or push-to-make momentary switch or the normally close (NC) or push-to-break switches. You will have peace of mind that the Langir momentary switch will work every single time.

The Langir momentary switches offer many types, colors, shapes, bushing diameters, and other specifications. They also have different terminal and mounting types. With quick-connect features; you can mount your momentary switch in no time without problems.

Langir offers dust-tight and waterproof momentary switches so that you can use them in outdoor applications worry-free. Aside from that, we offer IK10 momentary switches that can endure tough environments and will still produce their prime performance regardless. With Langir, you are guaranteed high-quality momentary switches, the best in the world.

Here in Langir, we submit our momentary switches to international certifications and quality inspections to ensure that we meet our customers’ expectations and requirements. You are always assured that our momentary switches are top-notch in quality and performance. As a push button switch manufacturer you can trust, we guarantee your satisfaction by choosing us for your momentary switch needs.

Ordering from Langir is also simple and fast. Our momentary switches are stored properly always ready to be dispatched and delivered to our customers anytime. In just a few days after your order confirmation, your momentary switches will arrive at your location in perfect condition and always ready for installation.

Our trained sales team is always happy to accept your calls and ready to offer you with only the best solutions you need. Simply call us for any of your inquiries and we’ll handle the rest.

Momentary Switch – FAQ Guide

This momentary switch FAQ guide will help you make the right decision in choosing the best suitable momentary switch for application.

You will learn its vast range of varieties, types, configurations, and the many applications of the momentary switches.

Aside from that, you will learn about how they can be installed in several applications which you can refer to for your future momentary switch projects.

You will also learn the many advantages of using a high quality momentary switch and how you can find them when you are doing your shopping.

Furthermore, you will be guided on how you can take proper care of your momentary switches and help prolong their service and shelf life as well as maintain their top performance.

So before you hit the check out button, read this complete guide of everything about the momentary switches so you will be a smarter shopper when choosing the best momentary switch for your application.

1. What is the momentary switch and how does it work?

Different types of momentary switches

The momentary switch is classified as a switch that has a momentary switch action to actuate the switch unit either to turn it “on” or turn it “off”.

It is also called a non-latching switch because it exhibits the a different switch action when compared to its counterpart, the latching switch which is the opposite of momentary switch.

Other terms that pertains to it are momentary button, momentary buttons, momentary press switch, momentary push, momentary push switch, push button momentary switch, or button momentary.

The term “momentary” refers to the temporary state of the switch because its spring loaded actuator does not stay compressed after releasing the force applied to it.

Instead, the momentary switch’s actuator springs back to its normal state or its un-actuated form.

The momentary switch has various types and configurations made to accommodate its many applications making it a versatile type of switch.

The common applications of the momentary switch are for doorbells, buzzers, intercoms, elevator call buttons, door or gate openers, cabinet openers, household appliances, and the list goes on.

Fun Fact:  The momentary switch was once called “lazy”

One of the earliest applications of the momentary switch is the wired TV remote control developed by Zenith Radio Corporation called “Lazy Bones” in 1950.

It was the first remote ever invented for television sets back in the day so people do not need to stand up and change their TV programming through the controls on the TV set.

This became widely popular because it promotes convenience and watching TV programs is more enjoyable when you’re sitting down and relaxing on a couch.

The porcelain kind features a button that serves as the on and off switch for TV while the other type is an enclosed funnel shaped remote with two momentary switches on opposite sides that can be operated by a thumb to change the TV channels.

This remote was immediately followed by new inventions perhaps due to the complaints that people often tripped over the remote control wire.

Succeeding remote controls have followed similar momentary switch actions which evolved to the modern remote controls that we use now.

Lazy bones wired remote controls

2. Where do we use the momentary switches?

There are a lot of applications of the momentary switches aside from using them in your household applications.

The momentary switches can be found in our every day.

For instance, when you use the elevator, some of the buttons on the elevator control panel are momentary switches like the open and close buttons, the call button, even the dial pad buttons.

Another example is the keys on the keyboard of a computer.

They are all momentary switches, the push-to-make type.

Other than these examples are the mouse buttons, the button on a laser pointer, anti-theft alarms, vending machines, and so on.

Below enlists some of the industries where momentary switches are used:

• Agriculture
• Airlines
• Automotive
• Construction
• Consumer electric appliances
• Factory machinery
• Food and restaurant
• Food packaging
• Garment factories
• Health and medicine
• Military equipment
• Ocean and sea vessels
• Power plants
• Transportations
• Water treatment facilities
• And many more

Momentary switch different applications

3. What makes up the structure of the momentary switch?

The momentary switch has several forms that can be actuated by pushing, touching, rocking, sliding, rotating, pulling, key-turning, throwing, heating, magnetizing, snapping, kicking, or any other physical force or interaction with the actuator.

This is why the structure of the momentary switch depends on its form.

In this case, we will discuss the parts of the push button or toggle type which is the most common momentary switch you will find in the market.

The momentary switch primarily has two main parts, the head where the actuator or the button is located, and its body or sometimes called shell, casing, or enclosure.

Enlisted below are the parts of the momentary switch that are important to know to help you find the best suitable one for your application type.

• Actuator

This is the spring loaded mechanical part of the momentary switch which we oftentimes call the button of the switch and it is actuated by pressing or pushing using a physical force.

This part of the momentary switch is the user facing part and the only visible section when mounted.

The actuator can be the flat head, raised, chamfer, concave, domed, or recessed face.

You can also find actuators that feature laser etched power symbols ideal for applications needing power switches.

There are different colors of the momentary switch that you can choose from such as natural, chrome, white, black, gold, red, blue, red, orange, yellow, and others.

Typically, the actuator has the same color as the rest of the momentary switch unit however there are options where you can have a different color for the shell.

• Body

This encloses and protects the components of the momentary switch and primarily supports its structure to ensure the best working performance.

It can be round momentary switch or a square momentary switch.

• Pins

Also generally known as terminals, these small metal bars protrudes at the bottom of the momentary switch.

For example, 2 pin momentary switch, 4 pin momentary switch, 5 pin momentary switch, and 6 pin momentary switch.

These pins come in different types such as solder lug and screw type which are the most common but there are also the spade terminals, feed-through, and other types available.

Depending on the momentary switch’s electrical configuration, the pins can be two or more and other configurations can have up to 6 and even more than that.

Other momentary switch types do not require these pins because they are built to be sealed where wires are already integrated into the switch’s unit.

• Illumination

Other types of momentary switches are called illuminated momentary switches or sometimes we call them the lighted momentary switch or momentary switch with LED.

In general, these types of momentary switches are equipped with a LED chip inside their mechanism which enables them to emit light whenever you press the actuator but this depends on how the wires were connected to its pins.

There are different illumination designs you can find such as fully illuminated, ring illuminated, dot illuminated, power symbol illuminated, ring plus power symbol illuminated, and backlit labels bearing logos that can indicate its function or purpose.

• O-Ring

This usually black colored rubber ring is inserted through the momentary switch and positioned under the actuator to help seal the gap between the actuator and the surface where it is mounted to.

• Mounting flange

This is the metal ring that generally bears a hexagon shape.

It is used to fasten the momentary switch from the back of the panel but there are other switch forms that the mounting flange is fastened from the front of the panel.

• Grooves

These engraved lines along the body or the head of the momentary switch serve as its threading where the mounting flange is fastened securely.

• Coil spring

The coil spring is usually made of metal and operates as the movement enabler of the momentary switch’s actuator.

Pressing the actuator will compress the coil spring storing some mechanical energy.

And when you release the actuator, its mechanical energy is released as well pushing the actuator back to its normal or un-actuated state.

• Contacts

These are the conductors of electricity installed inside the momentary switch.

There are two types of contacts, the movable and the stationary contacts.

Pressing the momentary switch will allow the movable contacts to touch the stationary contacts and this condition enables the flow of electricity that actuates the switch.

This, however, depends on the normal contact position of the momentary switch as the other kind has contacts touching each other initially and they break apart when the actuator is pressed hence cutting the electricity flow at the same time.

• Module unit

A module unit is a single unit that is built for special types of momentary switches.

This also means that the momentary switch does not have any moving parts that help prolong its service life.

• Touch sensor

The touch sensor is a technology present in momentary switches where the actuator reacts to a slight touch hence actuating the switch.

This also means that you do not need to produce much physical force because the momentary switch will actuate due to its touch sensitive properties.

Other parts of the momentary switch may not be included on this list but these are the most common parts and their functions are vital to maintain the structure of the momentary switch and keep it working.

Parts of the momentary push button switch

4. How does the momentary switch compare to the latching switch?

At this point, you already learned that the momentary switch springs back into its original position after releasing the pressure from its actuator.

However, when it comes to the latching switch, non momentary switch or maintained switch, the actuator remains depressed even after lifting the pressure from it.

Hence the term “maintained” switch is also oftentimes used to refer to the latching switch.

There’s a locking mechanism that keeps the actuator depressed inside the latching switch.

The only time that the latching switch’s actuator will bounce to its original or un-actuated position is when you press it again.

The behavior observed between the latching and momentary switch when they are actuated are called switch actions.

These switch actions are important on certain applications since the other switch action simply will not be compatible.

For example, doorbells use momentary switches for visitors to press for a brief moment to ring the chime of the doorbell and let the household know that someone is visiting their place.

If the doorbell will use the latching switch, when the visitor press the button, the chime will ring steadily unless the visitor presses the doorbell again to make it stop, a thing that you can’t force your visitors to do.

So this is why doorbells use momentary switches only.

The same principle applies to the latching switch.

For example, light switches use a latching switch because you need to have the lights on when you press it or lights off when you press the button again.

The momentary switch will only turn on the lights while you are pressing it and when you lift the pressure from the switch, the lights will turn off which defeats the purpose of the light switch.

As you can see, it is crucial to identify which switch action will be compatible with your application to avoid choosing the wrong one incurring more costs, and wasting valuable time.

But there are other switches that is classified as  latching momentary switch for having both switch actions such as the 2 step momentary switch.

Momentary switches on vintage doorbells

5. What kinds of materials constitute the momentary switch?

The momentary switches are made from different materials such as:

• Aluminum (Natural, anodized)
• Brass (Natural, nickel plated, or gold plated)
• Chrome
• Copper (Nickel plated or gold plated)
• Nitrile
• Polycarbonate
• Silicone
• Silver alloy
• Stainless steel
• Other materials as needed

One example is the metal momentary switch that is primarily made from metal materials.

Despite the diversity of available materials, one material usually stands out because of its anti corrosive property and durability and this is stainless steel.

Stainless steel is also used in many products such as kitchen appliances, utensils, cookware, cooking tools, and even in the house and building structures constructions.

It has a long list of different kinds or rather called SAE (Society of Automotive Engineers) assigned categories to distinguish their unique compositions.

When it comes to momentary switches, the two grades are the most commonly used and they are:

• SAE 304
  • This is the first option when manufacturing metal momentary switches since it already exhibits anti heat and anti rust properties.
  • This is also called 18/8 stainless steel.
• SAE 316L
  • Second, to SAE 304, this stainless steel grade exhibits better anti heat and anti rust properties and because of this, the momentary switch can be used in saline environments.

Momentary switches made of different materials

6. What does NO or NC mean in momentary switches?

The “NO” or “NC” are the abbreviations of the two commonly known normal contact positions.

Or the original position of the momentary switch or any kind of switch when it is not actuated.

The “NO”, when used in expanded term, is read as normally open therefore when used to describe the momentary switch it is labeled as the “normally open momentary switch”.

The normally open momentary switch contacts position is open which means that they are not touching each other thus there’s the absence of flowing electricity.

But when you press the actuator of the normally open momentary switch, these contacts also move and they become connected to each other and this enables the electricity to flow which actuates the switch.

This is why the normally open momentary switch is also referred to as the push-to-make switch.

On the other hand, the “NC” is the abbreviation of the term “normally closed” hence when used to refer to the momentary switch, it is labeled as “normally closed momentary switch” or nc momentary switch.

The normally closed momentary switch has its contacts closed, which means that they are connected and the electricity flows actuating the switch.

Pressing its actuator will break the flow of electricity, stopping the actuation, and therefore halting the operation of where it is used for.

This is why the normally closed momentary switch is also known as the push-to-break switch.

NC, NO, NO+NC momentary switch symbols

7. Is there are a specific mounting method for the momentary switch?

The momentary switches have specific mounting methods and sometimes one cannot be mounted in another way.

This information is usually advised on the momentary switch’s datasheet or product listing details.

Generally, there are three common momentary switch’s mounting types and these are:

1. Panel mount momentary switch

• The panel mount momentary switch is generally mounted on panel material and it has two subtypes.
• It has two subtypes, the front panel mount momentary switch which has a thicker actuator due to the presence of grooves along its sides where the mounting flange is fastened.
• And there’s the rear panel mount momentary switch which is mounted at the back of the panel.

2. Surface mount momentary switch

• The surface mount momentary switch is typically smaller in sizes such as the 10mm momentary switch, the low profile momentary switch,  small momentary button, micro momentary switch, micro push button switch, or mini momentary switch.
• These types of switches are usually mounted on printed circuit boards or PCBs.

3. Flush mount momentary switch

• The flush mount momentary switch provides better surface clearance than the others since they are usually flat head types and are fitted into a mounting hole where it is leveled with the surface.
• In this type of mounting, you can use a momentary switch with cover.

Momentary switches on control panels

8. What’s the mounting measurement of a momentary switch?

There are times when you drill a hole too small or too big for the diameter of your momentary switch.

Aside from the fact that the momentary switch will not fit properly, there’s also a possibility that you can also waste a good panel material and spend more time in the mounting process than usual.

This is why some manufacturers provide a panel cutout which is a drawing of the momentary switch’s diameter measurements that you can use as a tracing guide for its hole.

Sometimes you will be provided with behind the panel clearance measurement as well to accommodate the length of the momentary switch including the wires.

The panel thickness is also critical because a panel that’s too thin may not hold up the momentary switch strong enough to handle the pressure whenever it is pressed while thicker panels may result in loose mounting because the mounting flange can’t be fastened tightly.

At least, use a panel with around 10mm thickness.

Example of a panel cutout

9. What are the defining terms used for momentary switches in an electrical circuit?

Similar to other switches, the momentary switch also has four electrical configurations which are defined by the terms: SPST, SPDT, DPST, and DPDT.

These are abbreviations that indicate how many poles and throws the momentary switch has.

For example for the abbreviated term “SPST”, stands for “Single Pole Single Throw” which is an electrical configuration of a switch.

The word “pole” specifies how many circuits the momentary switch can control within a single unit while the word “throw” refers to the number of the switch’s position or output terminals.

The four main electrical momentary switch configurations are:

• Single Pole Single Throw (SPST)
  • The SPST momentary switch is also called the basic on and off switch, sometimes referred to as the two-way switch, or single pole momentary switch.
  • It has one input terminal or one “on” position and one “off” position.
  • The other variation you can find is the momentary on off on switch.
• Single Pole Double Throw (SPDT)
  • The SPDT momentary switch is also referred to as the A/B switch, break-before-make switch, or the changeover switch.
  • It has one input terminal or one “on” position but two output terminals which enables it to control two circuits.
• Double Pole Single Throw (DPST)
  • The DPST momentary switch is also known as the two circuit switch, double momentary switch, double pole momentary switch, or dual momentary switch.
  • It has two input terminals and two “on” positions but only one output terminal.
• Double Pole Double Throw (DPDT)
  • The DPDT momentary switch is sometimes referred to as two SPST switches.
  • It has two terminals for its input and output making it amenable to be configured as an SPST switch.

Different types of momentary switch in an electrical circuit

10. Are there momentary switches that are vandal-resistant?

Yes, these are called the anti vandal momentary switch.

These are heavy-duty momentary switches that can handle abuse and high usage.

They usually possess the IK seal or Impact Rating seal which indicates how strong the switch is against different levels of impacts.

The manufacturer submits their anti vandal momentary switch to several impact tests to observe the toughness of the enclosure against the impacts of up to 20 joules which is equivalent to 5 kilograms dropped from 40mm height.

If the IK rating is high, then it indicates higher protection provided by the momentary switch.

The highest IK rating is the IK10.

This is why the anti vandal momentary switch can be used in public places or in any applications that will expose it to frequent use and tough conditions.

IK10 rating chart

11. Are the momentary switches ideal for outdoor use?

Yes, but you need to choose the right momentary switch for outdoor use.

The outdoor environment exposes the momentary switch to external elements and changing weather conditions.

This means that there’s a high chance where solid or water elements can enter the enclosure of the momentary switch and can cause damage to its components.

You need to find the waterproof momentary switch which is specially built and tested to protect itself from solid and water ingress.

The waterproof momentary switch bears the IP rating seal or the Ingress Protection seal.

They signify what level of solid and water ingress the momentary switch can protect itself from.

The IP seal is followed by two numbers.

The first number indicates the level of protection against the solid elements while the second number indicates the level of protection against the liquid elements such as water.

The waterproof momentary switch typically has an IP rating of IP68 and IP69K which is the highest level of protection which means that it is dust tight and can handle any type of water ingress and permanent water submersion.

They are sometimes referred to as marine momentary switch.

While the IP65 rating and up to ip67 momentary switch are dust tight and considered water resistant momentary switches where it can handle water jets and temporary water submersion.

Waterproof momentary switches

12. Are there touch actuated types of the momentary switch?

Yes, there are types of momentary switches which are touch actuated.

These kinds do require much force to be actuated saving physical energy.

They have also sealed types of momentary switches which removes the issues caused by deteriorating mechanical parts thus enhancing their robust properties and prolonging their service life.

• Piezo momentary switch

The piezo momentary switch can also be called the “piezo touch switch” because it uses the piezo principle.

The piezo principle is the conversion of mechanical energy into the electrical energy needed to complete the electric circuit and this is called the piezo electric effect.

The piezo momentary switch incorporates a piezo electric element responsible for producing the electric charge to energize the FET or also known as the Field Effect Transistor which is a semiconductor.

When the piezo momentary switch is touched, the FET will activate the module inside it and lets the current flow.

When the actuation stops, the energy in the FET reduces and it returns to its original state until the actuator of the piezo momentary switch is actuated again.

• Capacitive push button switch

The capacitive momentary switch is considered the “true touch” switch because it is very touch sensitive that water flow alone can actuate it.

It possesses a touch sensor technology called the capacitance field.

The capacitance field maintains a cycle of charge and discharge forming a field on its actuator.

Any object with an electrical charge, even a small amount, can actuate the capacitive momentary switch.

When a human finger touches the actuator, the capacitance field is interrupted and this initiates the actuation of the capacitive momentary switch.

Our body has a small amount of flowing current which is why the capacitive momentary switch reacts to our touch.

Even when you are using an object to touch the actuator, as long as this object can carry electric current from your body or carry a small current of its own, it can actuate the capacitive momentary switch.

Aside from having no mechanical parts, the piezo momentary switch and the capacitive momentary switch both have integrated wires which make them perfect for wet environments.

There is no need to solder the wires or placing adhesive on them hence making the installation faster and easier.

One example of it is the momentary dimmer switch.

Capacitive switches

13. Are there alternatives to the momentary switch?

The momentary switch is just one of the huge number of switch types that are used in many applications.

There are also other types of switch alternatives to the momentary switch and these are:

• Flip switch
• Rocker switch
• Rotary switch
• Knife switch
• Mercury switch
• Footswitch
• And so on…

It is imperative to learn about these switches such as their advantages and disadvantages before you decide on choosing them for your application.

14. What does NC-MOM in momentary switches mean?

The abbreviated term is read as a normally closed momentary switch which means that when you press its actuator and release it, the switch turns “on”.

In a schematic diagram, it can also be labeled as ON-MOM where the term ON means “on” status instead of an abbreviated term, therefore it is read as “on momentary”.

NC-MOM can also have different electrical configurations such as SPST, SPDT, and so on.

Knowing how to understand these terms will help you know what type of momentary switch you will need especially when you are basing it on a schematic diagram.

15. How to work with momentary switches safely and properly?

If your momentary switch is high quality, it has passed strict safety requirements which relieve concerns about issues that can cause accidents while working on it.

But sometimes practicing safety measures is better and would promote worry-free conditions for you.

Here are some safety steps before working on your momentary switch:

• Ensure that you are in a well lighted area
• Organize tools and materials to find them easily
• Remove unrelated items on your work table
• Use a spill-proof mug to avoid spilling liquid on tools and materials
• If you will be working with live wires, turn off the power supply first
• Avoid touching components with running live electricity
• Check your momentary switch for any obvious damages or rust formations that may require repair or replacement since it may not be a good switch to work on anymore.
• Make use of the manufacturer-provided momentary switch manual such as wiring instructions, catalog, datasheet, etc.
• Make sure that there’s no flammable gas surrounding your work area since this could react from an electrical spark which can lead to explosion and fire.

Your manufacturer may also provide you with a list of safety measures specific to their momentary switches either via the product packaging or on their website.

Example of soldering work table

16. How to install the momentary switch to replace an old doorbell button?

If your doorbell’s button is already faded in color or broken, you can replace it with a momentary switch.

Ensure to choose a waterproof type since its doorbells are placed outside which exposes it to rain.

Prepare the materials below:

• Momentary switch (two units if you have a backdoor doorbell)
• Screwdriver

While the following materials may be needed when necessary:

• Crimping tool
• A push button switch box or push button switch housing (with a hole measuring the same diameter as the push button switch)

You can also purchase a switch box if your old doorbell button is not round in shape.

By doing this you separate the button of the doorbell from its doorbell unit and may need to mount the switch box separately on the wall beside the doorbell unit.

The switch box usually comes with some drilled holes and for this procedure, you can choose the one with a single hole with the same diameter as your momentary switch.

The steps below should guide you in the replacement process.

Step 1: Remove the old doorbell

Take out the old doorbell button as well as the wires connected to it.

Do the same if you have a second doorbell for the backdoor.

Step 2: Connect the wires

Take one wire and connect it to a pin of the momentary switch.

Then connect the other end of the same wire to the transformer.

Then a separate wire connects the second pin of the momentary switch to the first terminal of the signaling device.

Then take another wire to connect to the second terminal of the signaling device to the transformer.

Step 3: Wire the second doorbell (skip this step if it is not applicable)

If you have a second doorbell for your backdoor, you can connect a separate wire from the third terminal of the signaling device to the pin of the momentary switch.

Then another wire from the second pin of the momentary switch to the transformer, connect it to the same terminal where the first momentary switch is also connected.

Step 4: Test your doorbells

Mount the momentary switches and the doorbell back to the wall.

Lastly, test your newly installed doorbell buttons.

Doorbell wiring diagram with momentary switches

17. How do you replace your vehicle horn button with the momentary switch?

You can use the momentary switch if you would like to replace a broken horn button on your vehicle.

A black momentary switch perfectly compliments the interiors of your car.

Actually, in some places, driving with a broken horn is illegal so it is a requirement to maintain a working vehicle horn since it is for your safety and pedestrians as well.

Before we get started, make sure that doing this procedure will not void your vehicle’s warranty.

For new vehicles, such as new cars, a broken car horn is typically covered by its warranty and serviced by the dealership or car manufacturer.

If this is not the case, then you are good to go.

Here’s what you need to have for this procedure:

• 1 pc of 12v battery
• 1 unit of 12v momentary switch
• Wires

And the steps are:

Step 1: Wire the momentary switch

Take the wire from the horn device and connect it to one of the momentary switch’s pins.

Then take a separate wire to connect the other pin of the momentary switch to the positive terminal of the 12v battery.

Step 2: Wire for ground

Connect a separate wire to the negative terminal of the 12v battery for ground.

Then connect another wire from the other terminal of the horn device for ground on the body of the car.

You can also use an illuminated type of momentary switch that is easier to locate during nighttime because it emits light.

Car horn wiring guide

18. How do police sirens work using the momentary switch?

The police siren is another application of the momentary switch.

Typically, the siren unit has two momentary switches.

One button changes the siren’s tone in several types such as yelp, wail, two-tone, etc.

While the other momentary switch’s function is to prolong the tone of the siren as long as you are pressing it.

Example of a police siren device

19. How the momentary switch can help a biker’s problem?

One of the big predicaments of bikers is when they bike during the night.

It is difficult to see the road when the headlights of the vehicles from the opposite road are blinding especially when they use the headlight’s high beam that can almost blur your vision.

To solve this, you can wire a bike headlight using the momentary switch as your control.

Mount the bike headlight on your bike’s handlebars and the momentary switch on right or left grip whichever is most convenient for you.

You can press the momentary switch to turn on your bike’s headlights and warn the vehicles that you are coming and they need to turn off their vehicle’s high beam.

Unfortunately, this is not guaranteed to work all the time, but still, it can add a layer of safety for you when biking in dark places because you can see the road better and other vehicles can easily see you as well.

Bicycle with headlight

20. How does the momentary switch work on a computer?

The computer has a power button and a reset button which types of a momentary start switch or pc momentary switch.

Both have a similar function which is to initiate the system unit’s operation.

Although modern computers are lacking the presence of the reset button, some computer builders are still including it due to some customers’ demand.

The reset button restarts the computer which can also be done by the power button.

It is generally used when the computer freezes and restarting it is the only way to make the computer work again.

However, pressing the power button also provides the same solution.

It restarts most computer booting sequences which the reset button does not do but only some booting sequences and not all.

Therefore the reset button was deemed impractical by the computer manufacturers.

Despite knowing this easy solution for freezing computers, it should only be done as the last resort.

Try to open the task manager first by pressing the CTRL-ALT-DEL so you can end the process that is not responding.

Or if you can, close all the running applications and restart your computer properly.

Old computer’s system unit power button

21. What is a two handed control with momentary switches?

This is a device with two momentary switches positioned on both ends to act as a control for a machine.

They are positioned away from each other to enable the user or the controller to actuate them at the same time as required by the operation.

This device requires the controller to hold it with both hands hence the term “two handed control”.

22. What is the purpose of the momentary switch in conveyor machines?

The momentary switch can act as a control switch which can initiate the control circuit of the conveyor whether to break or make the signal current.

This condition sends the signal to the PLC or the Programmable Logic Controller of the conveyor that stops the machine’s motors.

It is said that this operation is better than the VFD method or the variable frequency drive method.

The momentary switch which acts as a starter switch also can stop the conveyor, initiate the loading process, or unloading process.

It also supports the lock-out or try-out or LOTO process because the momentary switch locks the supply of the power source going to the conveyor machine.

Example of a conveyor machine

23. Is the emergency stop button a momentary switch?

Yes, you are correct.

The emergency stop button is a type of momentary switch, a push-to-break type.

When its button is pressed, it immediately stops whatever operation it is wired to.

They are generally made from a robust plastic material and bright red in color since people can easily identify that the red color is for emergency purposes.

There are other similar applications of the momentary switch such as kill switch, panic button, medical alarm, SOS button, security alarm, and so on.

They all promote safety measures and procedures and must always be reliable when emergencies arise.

Emergency stop button

24. Does the momentary switch last a lifetime? If not, why?

Not all momentary switches can last a lifetime because their performance and service life will depend on several factors and these are:

• The quality of the momentary switch

Poorly made momentary switches may not last long despite the guarantees or advertisements.

Although they may be the low-priced alternatives, you can face issues with their performance later on and eventually render them unusable.

• How the momentary switch is used

Abusing the momentary switch can cause irreparable damage such as hitting it with blunt force or using sharp tools to press it.

Another instance is when it is used beyond its capacity or limitation.

Such as supplying a high electric current to a momentary switch with a lower voltage rating which can cause the contacts to burn and damage it ultimately.

Check the label of your momentary switch, it will look like any of these: 110 volt momentary switch, 110v momentary switch, 120 volt momentary switch, 120v momentary switch, 12v dc momentary switch, 240v momentary switch, 24v momentary switch, 5v momentary switch, momentary 12v switch, momentary switch 12v, 20 amp momentary switch, or 30 amp momentary switch.

• Compatibility with the environment

Using a regular momentary switch in wet conditions can also affect its performance or shorten its service life.

Moist and water can enter the switch and cause rapid rust formation in its metal components.

You should choose a waterproof momentary switch for this environmental condition.

On the other hand, a high quality momentary switch when properly used and installed in an appropriate environment can last up to a million life cycles which are more than enough to last a lifetime.

25. What are the common issues with momentary switches?

Some momentary switches issues are unavoidable simply because it is how the switch’s structure is built and because of how its components work while other issues are caused by human error or improper handling.

Some of the common issues with momentary switches and their definition are:

• Contact bounce

This common issue happens with mechanical switches such as the mechanical momentary switch.

Since these usually have a coil spring that enables the movement of the actuator when pressed and connects the contacts.

However, the combined energy from their movement and the coil spring’s elasticity causes the contacts to bounce apart once or several times in brief moments before they settle in place.

Although this may not impose any issues with power circuits this could result in pulsated electric current which could be misinterpreted as data for analog and logic circuits.

One of the early solutions to resolve the contact bounce issue was to use contacts wetted by mercury in the switch.

However, this solution has become unpopular over the years due to the health and safety hazards caused by mercury when released.

Another solution is the time delay which allows the contacts to stabilize before the current is introduced to them.

Lastly, taking several contact state samples before using the momentary switch to change the contacts state.

• Arcs

Usually, this happens when the momentary switch is already worn out, defective, or its connections are loose.

A transient arc forms between the contacts which causes the crackling sound and the momentary switch to overheat which can be a fire hazard.

You can reduce the amount of power being supplied to the momentary switch to quench the arcing.

Otherwise, it is better to have the momentary switch replaced with a new one with high quality.

• Incorrect size

This is a problem when you have purchased a momentary switch with the wrong bushing size and it is intended for a device or panel with a fixed hole.

If the momentary switch is smaller than the mounting hole, you can try to fix it by using placing an additional o-ring but this only works when the gap is only a few millimeters.

If the gap is too big, you may need to use a label plate with the same bushing size as your momentary switch and it comes with a label too.

• Melted pins

The momentary switch’s pins usually melt easily when it is being soldered using too much heat.

You should start with a 370°C setting on your soldering station first as this heat is generally enough for the leads to melt and connect the wires.

When soldering, try to target the lead instead of the pins with 1 to 3 seconds duration.

You can also use a fine tip soldering gun to avoid connecting the pins or melting the plastic material as well.

• Fitting becomes loose

This can be due to a loosened mounting flange, or damaged hole, and sometimes the momentary switch’s enclosure is made from plastic which became brittle over time and cause it to fall off its mounting.

When this happens, repairing the mounting hole or relocating the momentary switch may be required.

If the momentary switch is damaged, then replacing it with a new one is needed to solve the problem.

• Hot switch

This normally happens when the momentary switch is supplied by a high voltage beyond its voltage rating which can cause the burning of internal components and a potential fire hazard.

You can either connect a resistor or a conductor in the circuit to drop the voltage or purchase the momentary switch with the right voltage or that can handle a high voltage supply.

Electrical switch arcing illustration

26. What are the advantages of using a high quality momentary switch for your application?

High quality momentary switches provide many advantages as well as offering more value to your money.

Here are just some of the momentary switch advantages:

• Offers user command actuation

Since momentary switches only actuate when it is pressed by a user, it provides more control to the user to operate.

For example, a laser pointer with a momentary switch where the laser only lits up whenever you need it to light up when pointing at lecture materials in front of a class.

• Easy installation

Momentary switches are easy to install that even for the soldering method, the process generally takes only a few minutes to complete.

Other easy installation methods are with the use of switch connectors, male and female switch connectors, or simply choose the type with integrated wires such as the piezo momentary switch and capacitive momentary switch.

• Safety

Most of the designs of the momentary switches are toggle or push button types and these designs provide safety to its user since structure prevents unintentional operations unlike those with levers that can be flicked easily and involuntarily.

• Millions of service life years

High quality momentary switches have longer service life ensuring continuous working performance and uninterrupted operation.

• Money saver

Aside from affordability, high quality momentary switches offer better value to you because they have better durability removing the need to always purchase momentary switches to replace the broken ones.

• Versatility

There are almost limitless applications where you can use high quality momentary switches.

With a wide range of varieties and configurations, you can find one that is best suited for your application and the environment where it is going to be installed.

• Aesthetics

Whatever type you choose, the momentary switch will always deliver an attractive appearance because of its compact and modern looking design.

• Options

There are many momentary switches options you can choose from such as colors, sizes, designs, logos, illumination type, and so on.

• Zero maintenance

High quality switches require almost zero maintenance because it has anti dust properties.

But a little sanitation may be needed for those located in areas with high usage for health and safety reasons.

Modern application of momentary switch on a controller

27. How do you look for a high quality momentary switch online?

Nowadays, most people go online to shop for whatever they need and have their purchases delivered to their doorsteps.

But when it comes to finding a high quality momentary switch, the search can be difficult especially when you are not familiar with the indications that certify a high quality product.

So before you start shopping, read the guide below so you can be sure that you have chosen a high quality momentary switch.

• Good customer reviews

There are manufacturer’s websites or marketplaces selling momentary switches which includes the reviews from their customers.

These reviews are very helpful if you want to learn about the quality of the momentary switch from the customers who have already tried it.

It is important to spare some time to read them from their first hand experience, you gauge whether the momentary switch is a high quality switch or not.

• Look at the images and watch the videos

All momentary switch product listings have one or more photos posted on their listing page.

You can also watch its videos if available to learn more about the momentary switch and sometimes the company as well.

Sometimes when the product is new, it doesn’t have any reviews yet so these images and videos can help in inspecting the quality of the momentary switch.

You can zoom in to get a better visual of its material’s texture, edges, joints, or the momentary switch as a whole.

Sometimes by carefully checking these out, you can determine if it is high quality or not.

• Value over price

There are momentary switches that are cheap and sometimes they offer a sweet deal that can be hard to resist.

However, oftentimes these cheaply priced momentary switches do not have the kind of quality that you need for your application.

Check what the momentary switch can offer you such as its quality, features, and other specifications that you require.

Always put value first before price.

Sometimes you find a high quality momentary switch which can cost a bit more, but if it offers the right value to you then it is a better choice than going for less with less value.

• Trusted brand

Always look for a trusted brand, a company that has been manufacturing momentary switches for many years.

You can check the company’s website and learn more about them and their history.

You will also find their certifications which guarantee the quality and safety of their products.

Having long years of experience in the industry, they have already undertaken many audits, certifications, even recertifications since some certifications need to be renewed after several years.

These companies have built their authority and credibility which is why they are implementing strict quality inspection to guarantee high quality momentary switches.

• Quality markings

A high quality momentary switch usually has quality markings on its product listing page, packaging, or on its manufacturer’s website.

These markings can be quality seals or certifications that the manufacturer has acquired from independent governing organizations or process standardization companies.

This means that the momentary switch is manufactured to be high quality to meet its consumer’s expectations.

You may not be familiar with these markings, so below are some of them with a short description for each.

• IP65 up to IP69K – These Ingress Protection seals signify that the momentary switch is dust tight and water resistant or waterproof.
• IK10 – The highest level of impact protection seal which means that the momentary switch is robust and vandal proof.
• CE (Conformité Européenne) – This marking implies that the momentary switch conforms to the European standards of safety, health, and eco-friendly process requirements.
• ISO 9001:2015 – This confirms that the manufacturer of the momentary switch is compliant with QMS (Quality Management Systems) set by the ISO or the International Organization for Standardization which means that their provided products or services meet the customer’s requirements and expectations.
• REACH – This indicates that the manufacturer only uses safe materials to make their momentary switches.
• RoHS – This seal confirms that the momentary switch does not contain alarming levels of harmful chemicals which means that it is safe to use.
• TUV– This is a confirmation that the manufacturer of the momentary switch complies with the Technical Inspection Association that assesses facilities, processes, and products to promote safety.
• UL – This seals certifies the manufacturer meets the terms set by the Underwriters Laboratories after undergoing a product safety analysis.

There could be other quality and safety seals that you can find when checking out momentary switches online but these are the most common which can already determine that the momentary switches are high quality.

International quality seals and certifications

28. How to get your momentary switches custom made?

Some manufacturers offer customization services that allow you to create, modify, or configure your momentary switches.

When you want a custom momentary switch, you can:

• Request for the kind of material you want for your momentary switches
• Specify the diameter and other dimension measurements
• Define the shape of the momentary switch unit or the actuator
• Ask for a unique color or select the color combinations of your choice
• Select your preferred illumination color whether single, dual, or tri-color
• Choose the symbols you want or design your own
• Technical configurations
• Build your momentary switch from scratch

It’s like creating your own diy momentary switch.

Some of these customizations may not be possible with your chosen manufacturer.

It is best to consult with them first before acquiring their services to ensure that you can get your momentary switches customized the way you want.

Symbol options for customization

29. How can you help prolong the service and shelf life of your momentary switches?

There are ways to help prolong the service and shelf life of your momentary switches so that they can last longer and provide the best performance each time.

Below are some recommendations that are easy and very doable for you:

• Handle your momentary switches with care

Proper handling of momentary switches prevents accidents such as dropping them to the ground and the impact can loosen its components causing it not to work or demonstrate performance problems.

• Avoid using pointed objects

The actuator of the momentary switch is built for the human finger to touch or press.

Using a sharp tool to press the actuator can cause a dent on its surface or a scratch which can hurt the aesthetics of the momentary switch.

When this action is done frequently, the pointed object can bore a small hole through the actuator and this may cause an electric shock to the next user.

• Adhere to the manufacturer’s recommended use

When you order the momentary switch, you will receive a manual or a small booklet that may detail information about the switches.

It can also include how the momentary switches should be used such as how it is operated, how it should be mounted, its features, voltage capacity, environment compatibilities, and so on.

Not complying with these may cause harm to the momentary switches and may shorten their service life.

• Occasional maintenance

While high quality momentary switches are almost zero maintenance, it is still suggested that you check the performance and condition of your switch once in a while.

Check for any signs of rust or damage which can get bigger over time and cause performance issues with the momentary switch later on.

Cleaning the surface of the momentary switch is also necessary to wipe away deep seated dirt which can enter the interior or the back of the panel.

• Store properly

It is ideal if you have storage rooms where you can keep your momentary switches but if you don’t, that’s fine too.

As long as you keep your momentary switches in a clean and secure container then store them in a dry and cool place.

If you have ordered batches of momentary switches, they come with a box packaging which you can use to keep the rest of the momentary switches.

In this packaging, the momentary switches are also arranged in a molded tray that adds protection to each unit.

Even if the box packaging seems sturdy, you should still avoid placing heavy objects on top of it as the weight can damage the box and the switches eventually.

Finally, try not to leave your momentary switches in places where they can be exposed to direct sunlight which can decolorize them or worse such to cause them to heat up resulting in some components melting.

Momentary switch storage area facility

30. What does the warranty for a momentary switch guarantee you?

A product warranty is like a promise issued to you, the purchaser, by the manufacturer which details the conditions that warrant product repair or replacement within a specified time.

Manufacturers conduct rigorous quality inspections before dispatching your orders to you.

But sometimes, one unit can be overlooked which can turn out to be a defective switch.

If ever you received a defective momentary switch check the product warranty that is provided to you by the manufacturer.

The product warranty should come along with your order.

It should detail what to do when you receive a defective unit.

Generally, manufacturers will ask that you return the bad momentary switch to them.

The shipping cost could be shouldered by you or by the manufacturer depending on their policy.

Once they receive it, the momentary switch can either be repaired or replaced reliant on the manufacturer’s discretion.

You may need to allow several days or weeks to receive the repaired or the new momentary switch.

The length of time it takes will be determined by your distance from the manufacturer’s location.

A warranty’s coverage can be from 1 and up to 5 years depending on the manufacturer.

While defective momentary switches are covered, the damages caused by human error may not be included in the coverage as well as damages caused by natural calamities.

If you want to know more details about the manufacturer’s warranty coverage before you make your purchase, you may consult with them directly.