Does your road lamp have CLO function？

Usually, the led street light will have light attenuation overtime after use, and output lumen compensation (OLC) means that the road lamp maintains a constant luminous flux during use until the end of the luminaire's life. This function is mainly realized by the LED driver, LED driver can be set to gradually increase the current output with time, the current increases, the power will increase accordingly, the luminous flux will also naturally increase when the increased luminous flux is consistent with the attenuated luminous flux, it is equivalent to constant, H EVO street light with Infineon EUM series LED driver can achieve this function. Contact us for details if you are interested.

How can quickly find a suitable lens for my project?

To quickly find the right lens for your project, please refer to the following standards. But the accurate way is to calculate the most suitable spectral lens through lighting design. You can tell us the layout of the pole, lux requirements, road width, pole height, and pole spacing, and our engineers will provide you with a professional lighting simulation report.

• MH1=Road width/Height, if 0< MH1 <1 suggest Type I.
• MH1=Road width/Height, if 1< MH1 <1.75 suggest Type II.
• MH1=Road width/Height, if 1.75< MH1 <2.75 suggest Type III.
• MH1=Road width/Height, if 2.75< MH1 suggest Type IV.
• MH2=Pole distance/2 Height, if 1< MH2 <2.25 suggest Type XS.
• MH2=Pole distance/2 Height, if 2.25< MH2 < 3.75 suggest Type XM.
• MH2=Pole distance/2 Height, if 3.75< MH2 <6 suggest Type XM or XL

What is the standard warranty period for your street lights? If we want a longer warranty period, like 10 years, what should we do?

• Our standard warranty period is 5 or 7 years, depending on the LED driver we use. The warranty time is calculated from the time the road lamp leaves the factory. If there is any quality problem with the street light within 5 or 7 years, after you provide the corresponding video or photo to prove that the led street light is indeed faulty, we will analyze the cause of the failure and send you the corresponding accessories for replacement, such as send the PCB board or LED driver, you can replace it after you receive it. ZGSM will bear the transportation cost of the replacement part. However, we are not responsible for the warranty for lamp failure caused by man-made or force majeure.
• For the 10-year warranty, we will adjust the accessories according to the situation. The most important thing is to replace the LED driver, but the price may be higher than the normal warranty price.

How long is your delivery time in general?

We generally prepare a certain amount of materials for the main promote lamps, so the delivery time for small batch orders is about 3-5 days, and the delivery time for large batch orders is  10-15 days if materials stocks are enough.