Self-powered wireless switch: no cable, no battery, easy installation, environmental protection and no pollution. Safe and waterproof, can be directly installed in a bathroom, used with wet hands, can also control lamps and heaters remotely, without fear of electric shock, without worrying about rust or damage. moisture on the battery, etc. Quickly change the position of the switch, create a switch anywhere, as a remote control, remote control table lamp, etc., very convenient, compatible with any 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 testing the receiver distance first. What you'll find in the box: 2 x VIVIS Wireless Switch, 1 x Receiver