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The warning light is generally used in security domain, mainly installed on police cars, fire trucks, ambulance, heavy duty & roadside service vehicles, trucks, trailer, forklifts, cranes, towing, security, construction, mining, snow plowing, and every emergency warning applications. emitting light can be amber, blue, red, white or combo.

Type of subdivision includes led strobe light, emergency led light bar, led mini bar and led beacon.
There are many manufacturers and factories in the market, the quality is uneven, how to judge good led warning lights for trucks? What are the factors should took into account?
Dolamp Technology Company Limited is manufacturer and factory specialized in led strobe lights, emergency led light bars, led mini bars and led beacons for trucks, we are happy to share our suggestions:

1. UV(Ultraviolet Rays) Resistance
The warning lights for trucks are mainly used in outdoor, mounted on the roof of trucks, if the light shell or outer cover is made of ordinary material,  it will appears discoloration and crevasse crackafter after a certain period of time.
Ultraviolet Rays will cause the material properties changed, so UV resistance is an important factor when you are looking for led warning light for your truck.
LED strobe lights, emergency led light bars, led mini bars and led beacons with UV resistance can be used for many years in the outdoors without any problem.

2.  Waterproof Performance
LED warning lights used in outdoor must can tackle various weather,rain, snow , extremely wet or dry climate, waterproof design and process must meet certain requirements, once waterproof design is not good or using poor quality waterproof material, the moisture in the air and the water from the outside will come into the light, the electronic components will be corroded.
The best protection is IP68 , this is the requirement to the products work under water permanently.
At present, most led warning light manufacturers and  factories use fully sealed design, generally reach IP67, IP67 is main protection grade for all led warning lights and enough for most general use.
IP67:Completely prevent dust from entering and can be resistant immersion in a short period of time (under 1meter water).
IP 66:Completely prevent dust from entering and can be used in the cabin environment.

3. Meet The Requirements Of Local Regulations
At present, the world's two largest standards are ECE and SAE for the warning lights,  ECE is European standard, SAE is North American standard, it is the best to select suitable products according to your own national requirements.
What calls for special attention is that ECE approved is a must for led vehicle lighting products in European market, ECE number has to be sculptured on the product,led strobe lights, emergency led light bars, led mini bars and led beacons with ECE R65 approval is the best choice for Europe.
SAE is a self certification program, manufacturer determine whether the products meet the standard or not.

If you are looking for led warning lights to import from China and sell wordwide, you may ask is there a product can both complied with ECE and SAE?
The answer is "Yes".The difference between ECE and SAE is the optical requirements, simply say that is the different requirements of brightness and lumens at particular angles.

4. Temperature Of The Light
LED has a remarkable characteristic, LED light will generate heat when it works, poor thermal design will gather the heat but not transmit to outside to maintain a suitable temperature for the whole light, the brightness of the lights will be reduced observably after a period of using. You may not be able to bear its dim even the warning light is still far way from its retirement.

Thermal design of low power led warning lights is simple, because of the cross-ventilation in the process of trucks moving will take away the heat effectively, but for some high power lamps, neither internal nor external heat sink can be found, its real effective life need to be verified, the real effective life here refers to the time it can work and still meet the application requirements.
At present, more higher power led warning lights have been development by some manufacturers and factories, with internal or external Aluminum cooling fins, they bring higher lumen out put and visible at  more far distance.

As an ordinary consumer, the basics can help you to judge a good warning light for your truck.
If you are a distributor, agent, importer or going to import led strobe lights, emergency led light bars, led mini bars and led beacons, any led warning lights from China, further tests need to be done by yourself.


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