1. Wireless self-powered switch: no wire, no battery, easy installation, environmental protection and no pollution. 2. Safe and waterproof, can be installed directly in the bathroom, wet hands can also touch the remote control lamps and heaters, don't worry about the electric shock, don't worry about the moisture and oxide of the battery, etc. 3. Quickly change the existing switch position, create a switch anywhere or as a portable remote control, remote control night light lamp, etc., very practical, compatible with any light bulb.As halogen or incandescent lamp or CFL or fluorescent lamp or LED. 4. The maximum distance of the wireless remote control is 200 meters (outdoor), 50 meters (indoor), but the wall and obstacles affect the distance. 5.Before installation, we recommend trying out the receiver distance first. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.