【Super Design】 433Mhz RF Wireless Light Switch. No wiring required between lamps and switches. Stable and reliable performance with high reception sensitivity (> - 97dBm). Radio frequency signal transmission. Strong signal can pass through walls, floors, doors, panels, etc. It can be controlled within 50 meters in open space. 【Easy to Use】 The wireless switch can be attached with double-sided tape or screws. You can turn the device on/off anywhere via the wireless switch. It is a standard 86-type switch. 【Easy to Install】 The receiver's mini size is 47*42*23 mm. It is installed between the power supply and the device. It can be easily hidden in most electrical boxes or junction boxes, or can also use screws to attach it to the board. You can easily install it to control lights or outlets. No wiring required. 【Multi-user Control】 Each 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 uses a 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 required. And it can work for about 5 years. The battery can be replaced after disassembly. 【More Flexibility】 Extremely easy to set up and reset. You can easily add additional wireless switches yourself according to