Self-powered wireless switch: no wires, no batteries, easy installation, environmental protection and no pollution. Safe and waterproof, can be installed directly in the bathroom, used with wet hands, also You can remotely control lamps and heaters, without fear of electric shock, without worrying about rust or moisture in the battery, etc. Quickly change the position of the switch, create a switch anywhere, such as remote control, table lamp remote control, etc., very practical, compatible with any light bulb, such as halogen incandescent CFL fluorescent LED The maximum distance of the wireless remote control is 150 meters, but walls and obstacles will affect the distance. . Before installation, we recommend that you test the distance of the receiver first. What's in the box: 2 wireless switches, 1 receiver