The output voltage of led driver is selected based on the total forward voltage of the fixture LEDs in series or in parallel. When selecting the led driver for strip lights, allowance should be made for the output voltage. If the sum of the forward voltage of the lamp beads is 18V, the upper limit of the output voltage marked by the selected led driver is larger than 18V to avoid the inconsistency of the forward voltage of the LED lamp beads, and exceed the upper limit of the voltage so that the led drivers cannot work in the constant current state.
Usually, the output voltage of led driver for strip lights is 12V and 24V,
Smarts Electronics do all kinds of the constant voltage led driver with 12VDC and 24VDC.