Self-contained wireless switch: no wires, no batteries, easy installation, environmental protection, and no pollution. Safe and waterproof, can be installed directly in a bathroom, used with wet hands, and can also remotely control lamps and heaters 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, such as a remote control, a remote-controlled table lamp, etc., very convenient, compatible with any light bulb, such as halogen/incandescent/CFL/fluorescent/LED. The maximum distance of the wireless remote control is 50 meters, but walls and obstacles will affect the distance. We recommend testing the range of the receiver before installation. What you will find in the package: 2 x VIVIS wireless switches, 1 x receiver