single channel transmitter with wall mounted GP12V battery 220V, 50Hz and 110V, 60Hz 433MHZ roller shutter remote controlsingle channel wall mounted transmitterSuitable for roller shutter,roller door,awning,screen,blind and so onWorking voltage: 220V, 50Hz and 110V, 60HzWorking temperature range: -20 to +70 centiguradeWorking frequency: 433MHZ roller shutter remote control