Excellent DesignRF 433MHz self-generating wireless light switch.You can remotely turn on/off the light or other machine which connects to the relay receiver via the kinetic wireless switch.Stable and reliable performance with high reception sensitivity (> - 97dBm).Transmission of radio frequency signals.A strong signal can pass through walls, floors, doors etc.It can be controlled within 50 meters distance indoors.Easy to install The mini size of the receiver is 60*43*27mm.It is installed between the power supply and the device.It can be easily used screws to fix it on the board.You can easily install it to control lights or socket.No wiring required.Multiplayer ControlEach receiver can store about 5 wireless switches.So you can share the switches with the family.You can all remotely control the device that connects to the receiver.High Quality SwitchThe self-generating wireless switch can be clicked more than 200,000 times.No battery demands.Safe and waterproof, can be installed directly in bathroom, kitchen, etc.Wet hands can also touch the wireless switch.Don't worry about electric shock and wet and rusty battery.Friendly and considerate operation mode for children and the elderly.Quality AssuranceHigh quality relay can be used more than 400,000 times.This receiver adopts a 10A relay, which can charge high-power electrical appliances.The maximum load of the controller is 1000W.The receiver is suitable for AC 85V~250V voltage, so AC 110V/ 220V/ 230V is OK.