Who can help me to explain what is the output voltage of the DC controller LED lamp?
In general, a set of LED lamps has an electronic constant current device with an input voltage of less than 220 volts (depending on the nominal number). The output is a DC current (how much output is current determined by the power of the lamp).
It's all alternating current, and the emergency lights need DC power supply (like batteries).
One input voltage for your luminaire is AC 110~220 volts, and the other input voltage is AC 85~220 volts. Generally speaking, it is no problem to make sure that the input voltage is correct.
