This is 1 channel wireless Remote control switch.We are the professional wireless Remote control system manufacturer.We can design/produce 1ch, 2ch, 3ch, 4ch, 5ch, 6ch, 7ch, 8ch, 9ch, 10ch, 11ch and 12ch wireless Remote control switch, AC90v~AC270v or DC12v voltage working circumstance, 100m~10km...