Make sure to only feed the board from a regulated 12 volt DC power supply. Make sure the supply has the current capacity to handle the lights you are controlling. I am using Wirekats 32 led MR16 and they draw about .17 amps per lamp. Plan accordingly to your use.Do not attempt to control more than 2.5 amps per channel from the MR16 controller. This is about 15 of the MR16s I am using per channel. I also recommend you keep the total controller current under 35 amps if possible.