Super Design433Mhz RF wireless light switch. No wiring needed between lights and switch. Stable and reliable performance with high receiving sensitivity (> - 97dBm). Radio frequency signal transmission. Strong signal can pass through walls, floors, doors, panels, etc. It can be controlled within 50 meters away in open space.Easy to UseThe wireless switch can be fixed with double-sided tape or screws. You can turn on/off the device from anywhere via the wireless switch. It is a standard 86 type switch.Multiplayer ControlEach receiver can store about 10 wireless switches. So you can share the switches with your family. You can all remotely control the device corresponding to the receiver. And one transmitter can also control multiple receivers. For example, 1 switch installed on the wall next to the bedroom door and another placed on the bedside table.Quality Assurance High quality relay can be used more than 400,000 times. This receiver adopts 10 amp relay, which can load high-power electrical appliances. The receiver is suitable for AC 85V-250V voltage, so AC 110V/220V/230V is OK.High Quality Switch The wireless switch can be clicked more than 500,000 times. 12V 27A battery is requested. And it can work for about 5 years. The battery can be replaced after disassembly.