... ,8ch,9ch,10ch,11ch,12ch,13ch,14ch and 15ch wireless remote control switch,AC90v~AC270v or DC6v~12v voltage working circumstance,100m~10km ... design/produce 3 different functional wireless remote control systemindividually or design all the 3 functions together.One is self lock model,anotheris no ... /C is OFF;Use field: Electric fan wind speed wireless control RF Remote Control Power Switch