Self-powered wireless switch: no cables, no batteries, easy installation, environmentally friendly and pollution-free. Safe and waterproof, it can be installed directly in the bathroom and used with wet hands. It can also remotely control lamps and heaters. There's no need to worry about electric shocks, rust, or moisture from batteries, etc. Quickly change the switch position to create a switch anywhere; very convenient as a remote control, remote-controlled desk lamp, etc. Compatible with any bulb, such as halogen, CFL, incandescent, or LED lamps. The maximum distance of the wireless remote control is 150 meters, but walls and obstacles will affect the range. Before installation, we recommend testing the receiver's range first. Included in the box: 2 VIVIS wireless switches, 1 VIVIS receiver