How to distinguish the quality of LED indicators?

What are LED indicators?

This article covers the information you need to know when choosing LED indicators.

Therefore, if you want to learn more about how to distinguish the quality of the indicator light, please read this article.

There are many kinds of lights in life;

One of them is the electric light, which was invented for lighting purposes in our lives. It was on October 21, 1879, after long-term trial and error, the American inventor Edison finally ignited the world’s first electric light with practical value.

The other is the indicator light. Its function is not simply to illuminate, but to convey a specific signal. The initial indicator light was not stable enough to convey information normally due to technical problems, and then the LED was invented. , And LED, also known as light-emitting diode, is a solid-state semiconductor device that can convert electrical energy into visible light. It can directly convert electricity into light; therefore, LED lamp beads are now used as the light source of the indicator, which greatly improves the stability sex.

Therefore, LED indicators are a medium that uses LED lamp beads as a light source and can be installed on equipment to interact with humans and machines.

How to choose LED indicators?

  1. According to the different shell materials:

First of all, the shell material of the LED indicator can be divided into two types: metal shell material and plastic shell material;

According to different use environments, metal materials can be divided into stainless steel metal materials, brass materials and aluminum alloy materials;

The plastic shell is made of high temperature resistant materials of different degrees selected according to the ambient temperature of the equipment.

  1. Choose according to size:

Different sizes of equipment require different sizes of indicator lights. The smallest equipment can be light and commonly used hair dryers, ironing machines, etc.; large equipment can be electrical distribution boxes that weigh several tons, cranes, and so on.

Therefore, the size of the LED indicator also covers all types of equipment in the entire market, and the opening size can be found in the market from the smallest 6MM to the largest 30MM.

You only need to choose the size that suits your device size. If it is some special size, some factories can also provide customized production services.

Indicator light accessories



  1. Selection of voltage and color:

Each country has its own voltage, so the LED indicators in the market can also support customized voltages, from 3V-220V can be mass-produced.

Similarly, the light emitted by the LED is also colorful, and the specific color temperature can also be customized according to your requirements. Satisfy all your customized needs for LED indicators.

Colour temperature maps
  1. The appearance of the indicator is different:

In the metal indicator light series, the parts displayed on the device panel have three different appearances; they are flat head, concave head and high head, but the appearance is different, and LED lamp beads are also used.

The appearance of the plastic indicator is quite diverse, and the details can be understood according to the actual situation.

There is also a symbol indicator. Most of these indicators are used on the dashboard of a car. Various symbols represent different conditions of the car. Some manufacturers also support customizing the symbol or logo you want to light up. There will be unexpected effects at the time.

How to distinguish the quality of LED indicators?
  1. The level of waterproof indicator light:

The difference in the use environment makes some LED indicators have to be waterproof. The current waterproof grades are IP65/IP66/IP67. The higher the grade, the better the waterproof effect.

How to distinguish the quality of the LED indicators?


The first is to check whether the certification of the indicator light you purchased is complete; if you buy it in an online store, you can find the corresponding certification in the product introduction, or you can consult the customer service staff;

If you need to buy from the manufacturer, you can ask the manufacturer to provide various certifications of the product before placing the order. The merchants with the relevant certificates are more formal and professional.

When you get the purchased LED indicators, you can check the appearance of the product, whether the surface is smooth and free of burrs, whether the thread is smooth, whether the product is assembled tightly, and whether the product accessories are already there.

When the indicator light certification you get is complete and there is no problem with the appearance, you can try to install it on your own device. When fixing it on the panel, check whether its size meets the requirements, and gently push the LED indicator light. The indicator light shifts.

Before installation, please confirm that the device has been powered off, and then connect the connection of the LED indicators to the device. After the device is completed, power on the device and check whether the indicator light is normally on.

How to distinguish the quality of LED indicators?




Professional indicator light production supplier:

Indicator online store:

Contact technical support

Research and development of new indicator lights

The last step is to observe the lighting effect of the LED indicator, check whether the light color meets the requirements, whether there are problems such as light stroboscopic or insufficient lighting;

If the LED indicators you buy is waterproof, then in a safe and low-voltage environment, you can put the indicator light in the water to see if there are any bubbles. If there is, it means that the indicator has not fully reached Waterproof requirements, do not power on!

On the contrary, if there are no bubbles, you can try to power on the indicator light to see if the indicator light can be energized normally.

There is also the problem of the life of the indicator light, which is generally based on the data on the specifications provided by the manufacturer. If the LED indicators itself is damaged and does not light up, you can contact the seller to request a replacement service, because the general indicator light All have quality assurance.

If everything is normal, you can use it with confidence.

16MM 12V Latching R16 503AD Push Button Switch

The production of the 16mm 12V latching R16 503AD Push Button Switch.

1. The open hole diameter of the R16 503AD is 16mm. The nut is with cut edge finish, it is a plug on the panel. The button will not turn regardless of the machine’s vibration, movement, etc.

2. The R16 503AD Push Button Switch has no built-in resistance. On the external light pin, or on the PCB panel, the resistance corresponding to the desired integration.

3. The material of the r16 503ad push button head is high-light PC, combined with the white lampshade inside. The light is very uniform and is clearly visible under the strong light during the day.

4. The R16 503AD Push Button Switch housing uses high temperature resistance PA66 material, the service life is long and can reaches over 50,000 times. Usually, R16 503AD is built-in LED lights, and the commonly used colors are red, green, yellow, blue, and white. The LED that we imported is nonpolarity and two-way. This is more convenient for use, at the same time the lamp lights up with the lampshade is very elegant.

R16-503AD push button switch

5. The pin size of the r16 503ad is 2.8*0.5mm, it can be used directly for welding wire, it also can use a fast connect terminal of 2.8mm in order to save more time and effort.

6. The product is with a lock, meanwhile, we also produce the product with light and no lock.

7. The housing of the r16 503ad is designed to be short and can be used on some narrow panels, or where the small space inside the box. Such as the hotel bedside table integrated panel boxes, doorbell boxes, beauty instruments, and some other small machine equipment.

8. The push button head of the r16 503ad is designed to be convex, which makes the fingers easy to operate.

9. The pin of the r16 503ad adopts the silver-plated pin, and rivet pressed silver contact, it can prevent oxidation and has high conductivity and long life. Meanwhile, electrical signals can be enhanced in micro-current devices.

How to wire the R16 503AD Push Button Switch?

The following figure is our common wiring way, of which the first connection is the most common in daily use.

The function of this connection method: When the switch is locked, the light is on and the device starts to work, when press the switch again, the light is off and the device stop working.

The function of this connection method: The LED light is always on when the push button is not pressed. When the switch is pressed to lock, the device starts, then press the switch and bounce back, the device stops working.

Button switch wiring

The method of wiring:

  1. The positive pole of the power is connected to the load pin of the switch, and the other load pin is connected to the positive pole of the LED’s light pin and the device’s positive pole.
  2. The negative pole of the power is connected to the device’s attachment and the negative pole of the LED’s light pin.

The method of wiring:

  1. The positive pole of the power is connected to the load pin of the switch and the positive pole of the LED pin light, the other load pin is connected to the positive pole of the device.
  2. The negative pole of the power is connected to the device’s negative pole and the negative pole of the LED’s light pin.

Can the R16 503AD Push Button Switch produce the product without a lamp?

The product is divided into 4 functions

  1. r16 503ad with lamp and lock
  2. r16 503bd with lamp and no lock
  3. r16 503a no lamp with lamp
  4. r16 503b no lamp no lock

This product is a switch combination, which has the function of 1NO.

The head shape of the product is round, except for this shape, we also produce square head shapes. As following picture shows.

How to purchase the 16mm12V latching r16 503ad push button switch?

Free button samples

You can buy the product from our AliExpress if you only need a small batch sample or for your own use. Our store address is. You can also purchase from our official flagship store at

filn sales-team

If you are an engineer and need the sample for the test, you can email it directly to our international trade department, we have 10 years of experience in overseas sales. We are 7*24 hours online and will give you the best price and quality service, our email address is

Except for the r16 503ad push button, Filn also produces a metal push button, custom push button, rocker switch, indicator light, etc.

If you have any requirements, please email us at

16MM 12V Custom Automotive Push Button Switch With Light

Product drawings

16MM 12V Custom Automotive Push Button Switch With Light

Automotive push button switch parameters

Production Series FLM16-10FEJ Light Guide Button PC plastic
Button Shape round Actuator 304 Stainless steel
Button LED Color Red blue green yellow white Housing Sleeve H59 nickel plated brass/304Stainless steel
Mechanical Life The 500 thousand time Button Pin H62 copper alloy
Electrical Life The 100 thousand time Rubber Ring SIL silica gel
Protection Level IP67 IK09 Rnut H59 nickel plated brass
Rated Voltage 36V(DC) 250(AC) Housing PA66+GF20% nylon
Rated Current 5A(DC)5A(AC) Light Source LED
Rated Power 180W(DC)1250W(AC) Resistor Metal film
Operating Temperature -25℃~+85℃ Contact AgCdO12

The description of the 16mm 12V custom automotive push button switch with light:

The biggest feature of the product is that the head can be customized a variety of patterns and symbols, the following is the detailed description.

1. The open hole diameter of the product is 16mm, you can open the hole of 16.2mm.

2. The product commonly used voltage are 12V and 24V, we accept customize other voltages, such as 110V, 120V, 220V, etc.

3. The push button head of the product has a laser-engraved symbol, we can produce various car symbols as well as other specially customized symbols.

push button switch size

4. The shell material of the product is divided into 304 stainless steel, copper plated nickel, aluminum alloy oxidation.

The stainless steel material has stronger corrosion resistance, longer service life, which is suitable for outdoor.

After using an excellent nickel plating process. The surface of the brass plated nickel product is shiny, like a mirror. The aluminum alloy oxidation product can be oxidized into a variety of colors, such as black, red, green, gold, which is suitable for some specific places.

Use scenarios of button switches
automotive push button switch

5. The product are usually built-in LED lights, commonly used colors are red, green, yellow, blue and white. We can also accept customization if you have other color requirements. Besides, we can produce multiple color products, such as red and green, blue and green, red and green and blue, red and green and yellow, etc.

6. The pin size of the product is 2.8*0.5mm, which can be used directly for welding wires and quick connection terminals of 2.8, this will save more time and labor.

The product has two functions of self-reset and self-lock.

7. The product has a special connection socket, which is convenient for wiring.

How to connect the wire with the automotive push button switch?

The following figure is our common wiring method, and the first connection method is the most common.

Bridge connection one light pin and the switch’s NO pin, then connect to the required working equipment.

The public pin is connected to the power’s positive pole, the negative pole connects to the device’s load. The other LED light pin is connected to the power’s negative pole.

Press down the switch, the LED light inside the metal push button switch is on and the device starts to work.

On the contrary, the device stop working and the light is off.

wire a push button starter switch

Connection method 1

wire a push button starter switch

Connection method 2

wire a push button switch

Connection method 3

Can the automotive push button switch customize the symbols?

The common used symbols are battery symbols, brake symbols, parking symbols, danger alarm symbols, turn signal symbols, fog lamp symbols, power symbols, high beam symbols, engine failure symbols, etc.

These symbols are usually used in the car dashboards, as well as some cars, racing, motorcycle modification. In addition to these, we also produce other customized symbols, such as skull symbol, doorbell symbols, heating symbols, start pause symbols, volume plus and minus symbols, speaker symbols, etc.

In short, send us the symbolic pictures you need, we can produce as you request.

Engine Temperature Warning Indicator Light

What is the MOQ of the customized automotive push button switch?

The customized product has no MOQ, we can produce from one piece, and we can arrange the delivery quickly. We only need one day from order to delivery.

Recommended other commonly used push button switches

How to buy the automotive push button switch?

If your purchase quantity is small or need small batch samples, you can purchase them from our AliExpress, you can also purchase from our own official retail store.

In the future, you can buy it from our Amazon store, currently, we are launching links of the customized symbols.

If you are an engineer, you need samples for the test, please email directly to our international trade department, we have 10 years of experience selling overseas, we are online 7*24 hours and will give you the best price and premium service, our email address is

Free button samples