... ,11ch,12ch,13ch,14ch and 15ch wireless remote control switch,AC90v~AC270v or DC6v~12v voltage working circumstance,100m~10km meters.Our ... long-distance control;4:Industrial long-range control;5:Door wireless open/close,car multi-route alarm;6:Motor rotation control.VII:Waterproof ... off automaticaly...Same of channel B/C/D.Use field: Electric equipment ON/OFF wireless control;garage door open/close, ...