There is a rather difficult problem that many people may not know about. That is what the reference number means for LED lighting. And will the numbers infect the light performance? OK, here we will discuss the meaning of it today.

The reference number is telling you the maximum lighting intensity the lights can make. Measuring by the maximum intensity in candela, it can tell you whether the light is powerful or not. If a pair of headlights which have17.5 as the reference number, a pair in total is 35.