lighting remote control switch digital remote control switch 12v remote control light switch automatic light switch 4chanels wireless remote control switch This is DC12V 4ch wireless ... ,7ch,8ch,9ch,10ch,11ch and 12ch wireless remote control switch,AC90v~AC240v or DC12v voltage working circumstanceOur wireless remote control ... ,the relay A/B/C is OFF;Use field: Electric fan wind speed wireless control