Langir SPDT Push Button Switch Stand by You
Langir SPDT push button switch is one of the type in Langir switch big family. They mainly includes L16, L19A, L19B, L22B series whose the hole diameter is from 16mm to 22mm.
- Single color, bi-color & tri-color is optional
- Metal surface is easy to clean
- Easy to be installed on the panel or board
How do We Custom Your SPDT Push Button Switch?
Langir SPDT push button switch technically has the characteristic of single input. However, this switch is unique in the sense that it can connect to two outputs altogether, or switch between the two.
Simply put, the SPDT button switch has only one input terminal, but it has two output terminals. You could also see an SPDT push button switch installed in alarm system, cars and motors.
Langir has SPDT push button switches that include the L16, L19A, L19B, L22B series, etc. These switches can be customized according to your preferred design and specifications.
You can choose from our six options of colors, although you can also opt for bicolored and tricolored ones. If you want a single-colored switch, you may choose from white, red, yellow, orange, blue, and green.
But because customer satisfaction is our priority, you can also specify the color you want, and we, at Langir will provide it for you. Our switch is easy to clean and easy to install.
Plus, you can be assured with our 365-day warranty. Tell us what you want, and we’ll make it for you.
Langir SPDT push button switch is a Single Pole Double Throw (SPDT) switch is a switch that only has a single input and can connect to and switch between 2 outputs. This means it has one input terminal and two output terminals.
Langir L16 series, L19A series, L19B series, L22B series etc have this feature.
Langir provides 6 colors such as green, white, yellow, orange, red, blue, not only single color, but also bi-color.
Yes, Langir provide it.
Langir push button switch is 365 days warranty.
Reputed SPDT Push Button Switch Supplier
In Langir anti vandal switch series, our L16, L19A and big current vandal resistant push button switch meet SPDT feature.
Usually these kinds of switches have four to six pin terminals. Pin terminals of Positive electrode and negative electrode are for led connection. The other 4 pin terminals are for you to connect common and NO1 and NC1.
We also provide you two ways for wires to save your time, and you could spend more time on the market. One way is the connector with different length wires behind, you just need plug in or pull out. You may also sell separately to your customers. The other way is: you tell us your target wires length and AWG, we will help you to solder them with the heat shrinkable tube.
Connecting with wires
Langir spdt push button switch dot or ring illumination includes standard 6 led colors. You could choose red, green, yellow, orange, white, blue single color. What is more, for bi-colour and tri-colour. One of our Germany customer like white color for our L19M series which is installed in the door access panel.
Langir spdt button switches can be applied in many situations. When you walk on the street and want to drink coco-cola or water, you will see this push button switch on the kiosks and press it. Then you will get this drink. In China when you want to take some cash from ATM machine, you will find this SPDT pushbutton there.
With over 16 years experience in this field, we have gained abundant experience to help you to find the suitable push button switch for you. Please contact us now to get yours.
SPDT Push Button Switch – FAQ Guide
In this FAQ guide, you will learn a lot of things that you may not know until now. You will also learn about its history, its many applications, how it works, and its components. Best of all, you will learn the many types and features of it so you will know your options.
You will also be guided on how to make sure that you will find the best suitable switch for your application needs and the other essential information you need to know for the best consumer experience. You will be amazed how they can change your lifestyle and the way you look at push button switches.
You must continue to read this guide so you can choose your switch smarter and wiser.
1. What is the SPDT push button switch?
The switch, sometimes called as SPDT push switch or SPDT button, is a single pole and double throw switch which also means that it has a single input terminal and two output terminals.
From the single connection, it can connect to or switch to any of the two outputs.
It is also called the three way switch or the two way switch for British mains wiring term.
It is also known as Form C, a basic break-before-make changeover switch where the common wire is connected to L1 or L2 either way.
It is an ideal choice if you have two power sources to select from or swap inputs.
2. Where is it being used for?
They are used in many applications.
For example, when you walk out in the streets you will find vending machines where you can get a drink by pressing the buttons.
In places such as the train stations, you can get your ticket by pressing the button of the ticket dispenser.
When you go home, you press the doorbell to have anyone from your family let you in.
These are just some examples of the common applications but unknown to most people, there are more uses such as the following:
- Controls on front panels (i.e. on/off button, reset, buttons for mode selections and eject function)
- Communication controls (i.e. high and low volume controls, scrolling menus, control keys)
- Consumer equipment (radios, remote controls, computers, joystick controls, peripherals)
- Transportation controls
- Agricultural, construction, off-road heavy industrial machinery
- Aerospace panels
- Medical equipment
- Marine and military equipment controls
- Telecommunications equipment
- Enterprise network equipment controls
And there could be more uses of them in other applications and different industries.
3. How does it mechanism work?
It works starting from its three terminals, a common pin, and two more pins that connect to the common.
For example, the switch is connected to a red LED and a yellow LED where you can wire it to create one or two modes.
In one connection, the red LED is turned on and the yellow LED is off while another connection would have the yellow LED turned on while the red LED is off.
In the first connection, when the user presses the button the red LED is turned off and the yellow LED is lit.
While for the second connection, the one that’s turned off is the yellow LED and then the red LED is the one lit up.
Depending on how it was wired, it can serve as an on-off switch or it can also be connected to serve as a ready or standby mode.
4. What are the components which comprise the SPDT push button switch?
It has similar components to the other push button switches.
The external features have the following components:
- The head – This can refer to the actuator or it is the plate that houses the actuator button.
- The body or enclosure – This protects the internal components of the push button switch and is usually made from stainless steel.
- Pins – These are also known as the push button switch terminals which can vary in numbers which can be soldered or screwed to connect the wirings.
While the components inside the SPDT push button switch are the following:
- The LED chip – This chip lights up when you push the button or stays lit depending on how you wire it.
- Spring – This metal spring allows the movement of the actuator so you can push it down to activate the switch.
- Movable and stationary contacts – These pieces of electrically conductive materials are positioned inside the push button switch and make contacts when the actuator is pushed down, therefore, allowing the current to flow.
5. Is the SPDT push button switch normally open or normally closed?
It can be a normally open or normally closed type of switch.
It can be an “on-on” switch which means that it is in the “on” in both positions that is commonly used to turn on two separate devices hence it is called the changeover switch.
Aside from the push button type, SPDT can also be found in toggle switches, rocker switches, sliding switches, or microswitches.
Normally open type
6. How long is the life cycle of the SPDT push button switch?
The mechanical life cycle pertains to the number of times that you use the switch while the electrical cycle refers to the internal parts of the push button switch such as the coils, springs, stationary and movable contacts.
Remember to only choose a high quality switch to ensure longer mechanical and electrical life cycles.
7. What is the wiring guide of the SPDT push button switch?
The SPDT push button switch wiring guide depends on the number of its pins.
The illustrations below depict the wiring examples for different numbers of pins:
Different terminals of SPDT push button switch
You can also find the wiring instructions depending on the number of pins that the SPDT push button switch has.
For example, 2 pin push button switch datasheet, 4 pin push button switch connection, or 4 pin push button switch datasheet.
8. Does the SPDT push button switch have a harness type?
Some manufacturers include the harness or pigtail connectors along with the SPDT push button switches.
An example of this is the 4 wire push button switch which can come with harness switch plug.
These are also called the switch socket plug and are usually made from plastic material.
You can verify this on the product’s images, description, and via the manufacturer as well.
The SPDT button switch socket plug already has several wirings attached to it so you don’t have to solder the wirings to connect to the push button pins anymore.
The SPDT push button switch and the SPDT button switch socket plug may arrive separated but you simply have to plug the switch into the socket and you’re all set.
The SPDT button switch socket plug has the same number of pin receivers as with the SPDT push button switch in the same position so connecting them together is a no brainer.
You can install your SPDT push button switch easier and faster and have it ready for use immediately.
SPDT Push Button Switch connector 19mm
9. What is one example of the SPDT push button switch electrical diagram?
One basic SPDT push button switch electrical diagram is shown below.
Other electrical diagrams may show relays or conductors depending on the purpose of the SPDT push button switch.
SPDT electrical wiring diagram
10. How many pins does the SPDT push button switch have?
The number of pins of the SPDT push button switch can be 4, 5, 6, or more.
They are also called terminals or stationary pins and they have their own specific functions.
For example, a 3-pin SPDT push button switch has the following:
- NO for normally open
- NC for normally closed
- C for common
A 4-pin SPDT push button switch has the following pins:
- (+) Positive
- (-) Negative
- 1 pin for the power supply
- 1 pin to the device
A 5-pin SPDT push button switch has the following:
- (+) Positive
- (-) Negative
- NO for normally open
- NC for normally closed
- C for common
While a 6-pin push button switch would have the following:
- (+) Positive
- (-) Negative
- 2 NO pins for normally open
- 2 NC pins for normally closed
You may find other SPDT push button switches that may have more pins than what is stated here.
The labels are standard among the manufacturers so you would most likely see similar pin labels and prevent you from getting confused.
When you order the SPDT push button switch you will also receive the wiring paperwork to guide you when it comes to wiring the pins.
You can also consult the manufacturer if you need to get some clarifications or questions about the wiring instructions.
11. What is the available amp range for the SPDT push button switch?
In general, the amp range of the SPDT push button switch is between 3 amps up to 5 amps.
However, you can find a high current type of SPDT push button switch that would have up to 20 amps.
Big current SPDT push button switch
12. Can you use a higher voltage for the SPDT push button switch?
Manufacturers would specify the amp rating of their SPDT push button switches either in the product description or product information in the packaging.
For example, you can find the information 12v single pole double throw switch or 12v SPDT switch on the product description.
You must connect the SPDT push button switch to a power supply within the range of the specified amp rating.
Otherwise, the switch may overheat and the interior components may burn and it will no longer work.
If this is inevitable, you can include a relay to control the current flow to the SPDT push button switch and avoid it from overheating.
13. How can you custom your SPDT push button switch?
You can customize your SPDT push button switches by consulting the manufacturer.
Some manufacturers accept customizations for the LED colors, designs, or the material used for the SPDT push button switch.
You can also request material options to make your switch or perhaps have them integrated into a special panel that you designed.
Simply contact the manufacturer and provide them your requests and they will be happy to give the customization options for you.
This way, you can have a unique looking SPDT push button switch that will match the design of where it will be used for.
14. Is there a miniature SPDT push button switch?
Yes, the miniature SPDT push button switches are generally used in PCBs.
They are tiny push button devices that can fit any limited space and are usually used for Arduino circuit purposes.
15. Can you find a low profile SPDT push button switch?
Yes, you can find the SPDT push button switch with a low profile available in some manufacturers.
These types are generally shorter in length when compared to the standard push button switch.
They are very ideal for panel or switch box installations since it occupies not much space at the back.
16. Can you use the SPDT push button switch in the water environment?
This depends on the water resistant protection level of the SPDT push button switch which is defined by the IP rating or Ingress Protection rating
The IP rating has different levels of protection against solid and liquid elements that could enter the enclosure of the SPDT push button switch and cause damage to the internal components.
The protection levels are represented by two numbers; the first number is for the solid protection level while the second number represents the water protection level.
If the enclosure has good protection against these elements it would have a higher set of numbers for its IP ratings which is usually IP65 and above.
Here’s a table that further describes each IP protection level for your reference:
IP code rating definition
17. Is the SPDT push button switch a marine-grade switch?
There are SPDT push button switches that are marine-grade waterproof which means that it has a tough barrier against water ingress.
It can be submerged underwater for up to 30 minutes and still function properly.
Some people get confused between water resistant and waterproof.
Water resistant push button switch has protection against moisture, rain, a splash of water, or against any similar conditions but may not have enough protection when submerged underwater for a long time.
So when looking for a marine-grade SPDT push button switch, ensure that it is described as such in the product information before making a purchase.
Otherwise, you can also directly consult that manufacturer and confirm this feature with them.
18. Is the SPDT push button switch a vandal resistant type of switch?
Yes, the SPDT push button switch has vandal proof types available.
Vandal proof push button switches are specially developed and designed to be installed in places where they are going to be frequently used or exposed to a high risk of intentional or unintentional damage.
They are also able to endure tough weather conditions and sometimes even extreme temperatures.
You will oftentimes see these types of switches in public places, inside business establishments, and even used in production control switches in manufacturing factories.
Since vandal resistant SPDT push button switches are usually made from robust materials such as stainless steel and other highly durable materials, they are completely protected and can last for a very long time.
Manufacturers would generally indicate if their SPDT push button switch product is vandal proof but there’s also a way that you can determine it yourself.
It is by checking its IK code or to be specific if it has the IK10 seal which is also known as EN 62262.
IK means Impact Protection which is the degree of defense that the enclosures of the push button switches can provide.
This helps determine the level of kinetic impact that the SPDT push button switch can withstand.
Manufacturers submit the SPDT push button switch to undergo an impact test called the Charpy Impact Test.
Once the SPDT push button switch passes the series of test procedures, it will be certified as IK10, therefore, providing you an assurance that it is vandal proof.
19. Can you use the SPDT push button switch for your car?
You can use the SPDT push button switch for the controls of your car or any type of vehicle.
You can use it for different electrical purposes both in the interior or exterior areas of your car such as head and fog lights, dome light, chassis lamp, power window, audio controls, and so on.
If you plan to replace the broken horn button or add a bass system for your car, you can use the SPDT push button switch.
Aside from cars, it can also be used in other vehicles such as trucks, SUVs, ATVs, motorbikes, and so on.
You can always DIY the installation procedures by checking out video tutorials online but you can also hire a mechanic to do the installation for you.
If you have a brand new vehicle, you may need to consult your dealer about it to prevent voiding your vehicle’s warranty.
Most likely, they have specific policies when it comes to modifying or replacing factory installed car parts.
Classic car dashboard
20. Can you use the SPDT push button switch as an on and off button for LED strip lighting for cars?
Yes, some people install LED strips either on the interior or exterior of their cars and connect the SPDT push button switch to turn the LED lights on and off.
The SPDT push button switch has two output terminals which mean that it can turn on two LED strips at once.
You can always wire it whichever you want and finish your LED strip installation fast and easily.
LED strip lights
21. Can you use the SPDT push button switch as a push to exit button for doors and gates?
Yes, you can use the SPDT push button switch as a push to exit button for doors and gates.
They can be wired easily to replace the old door or gate control buttons and will work just like the same as those which they replaced.
If you are not sure how to wire them, you can check the manual of your door or gate’s push to exit button to guide you with the installation.
Also, you can seek the assistance of an electrician to help you replace the controls with the SPDT push button switch and make sure that they are wired properly.
22. Can you use the SPDT push button switch for alarm systems or safety alert systems?
Yes, SPDT push button switches can also be used for these types of systems.
You can wire the SPDT push button switch into a buzzer or ringing device and push the button to set off an alert or alarm when an emergency situation arises.
It can also be wired to send alarm signals across the house or separate rooms such as in a business setup.
Otherwise, you can also use the emergency push button switch to ensure that you follow the safety standard rules in your region.
Emergency push button switch with snap
23. Is the SPDT push button switch ideal for PA systems?
Yes, the SPDT push button switches are also ideal for PA systems which are generally used in schools, parks, playgrounds, train stations, stadiums, and many more.
The PA system comprises loudspeakers, amplifiers, microphones, and other similar electrical equipment that increases the volume of either the speaker or the sound of the music playing.
You can wire the SPDT push button switch to replace a broken button on the PA system.
Since the SPDT push button switch is made from durable materials, it is perfect for PA systems that are always used for a long time.
24. Can you install the SPDT push button switch for the controls of a DIY boombox?
Yes, of course, you can do that.
Another great thing about the SPDT push button switch is that it can be used for DIY applications such as building your own boombox.
Music lovers and musicians like to build their own audio equipment and set up controls that they like.
This is why the SPDT push button switch is a great choice for your DIY boombox project.
You can wire it however you like and soon you can complete your DIY boombox project in no time.
25. Can you wire the SPDT push button switch for desk and floor lamps?
Yes, you can.
In fact, the earliest applications of push button switches are for street lights and flashlight buttons.
You can replace the broken switch of your desk and floor lamps with the SPDT push button switch.
By wiring the SPDT push button switch properly, you can have a push button controlled lamp which is easy to use and would look good in any lamp design.
26. What are the different descriptions of the SPDT push button switch?
Usually, you will find the following descriptions of the SPDT push button switch:
- Order code – This indicates the series number and the options for the actuator, terminal, function, current, material, illumination style, LED color, illumination voltage, and sometimes graphic styles.
- Product description – This either enlists or illustrates the dimensions of the push button switch that includes the diameter size and panel thickness.
- Technical data – This enlists the other technical and important information of the SPDT push button switch that includes the max switch rating, contact and insulation resistance, dielectric strength, shock and vibration resistance, ambient temperature, mechanical and electrical life, IP and IK protection level, and many more.
You will also find the more detailed dimensions, lens options, panel cutout, etc.
These description categories differ from one manufacturer to another but you will notice that they all use standard and uniform terms for their SPDT push button switches information.
27. How can you purchase the SPDT push button switch?
The SPDT push button switches are often available online and you can purchase them through the manufacturer’s website.
The manufacturers can accept small and big quantities of orders and have your orders delivered to your doorstep.
They have several payment methods available so it is very convenient to purchase anytime you need the SPDT push button switches.
They may require you to pay in full for small orders, while you only need to pay a portion of the total price for big orders and pay the rest after receiving the SPDT push button switches.
The prices and policies are subject to change so it is better to confirm this information with your manufacturer.
28. Does the SPDT push button switch have warranty coverage?
Most manufacturers will advise you of your product warranty which can be 1 year, 2 years, 3 years, or more.
The warranty coverage and its policies will rely on the manufacturer so you will notice that there are different warranty coverages between manufacturers.
This information can also be located on the product page of their website, the paperwork that is included in your order, or on their advertisements.
Consumers like you should know the warranty coverage of the products you purchase which includes SPDT push button switches.
You need to know what you can do if ever you receive a bad batch of switches, or if they suddenly stopped working.
The warranty includes the returns policy that will guide you on how you can request repair or replacement.
Otherwise, you can choose to contact your manufacturer and advise them of the problem.
You may be asked to send the SPDT push button switches back to the manufacturer so they can repair them.
The manufacturer also decides if the SPDT push button switches can be replaced with an entirely new batch of switches.
This repair process can take up to several weeks which can be a long time for some people.
This is why it is important to purchase from a trusted and reliable manufacturer to ensure that you will receive only the highest quality SPDT push button switches without any issues.
Usually, these manufacturers have been operating in business for many years which can attest to the quality of products they manufacture.
Their facilities and their products have undergone many quality inspections and certifications which is why they can guarantee 100% satisfaction to their customers.