Most LED light bar products run on constant voltage DC. Commonly used DC voltages are 12V and 24V.
First, you need to check whether the rated voltage of the led light power supply unit matches the LED strip voltage. The undervoltage of the LED strip will cause the LED strip to run at a lower brightness or no light output at all, and the overvoltage will burn your LED.
Second, make sure that the led light bar power supply capacity is sufficient to drive the LED light bar. This can be calculated by looking at the specification table of the LED light bar. For example, if the LED light bar is 1 meter 3W, a total of 4 meters, then the total power of the light bar is 3W * 4M = 12W, you need at least a 12W power supply to drive.
Finally, you need to check whether the driver power supply and LED light bar match in the way of the connector and plug. in order to help you understand some information, we have compiled the following picture for your reference.
