... TUV,RoHs,CB,CE,CCC,UL Long distance control transmitter within 50 meters Portable transmitter Shinilion Portable ... Roller Shutter transmitterRoller Shutter transmitter , Awning remote control , Projection Screen Transmitter , Switchremote control set ,switch,transmitter Suitable for rolling door, ... 220V, 50Hz and 110V, 60Hz Working temperature range: -20 to +70 centigurade Working frequency: 315MHz