【Excellent Design】 Self-generating 433MHz RF wireless switch. You can remotely turn on/off the light or other device connected to the relay receiver via the kinetic wireless switch. Stable and reliable performance with high receiving sensitivity (> - 97 dBm). Radio frequency signal transmission. A strong signal can pass through walls, floors, doors, etc. It can be controlled within a range of 50 meters indoors. 【Easy to Install】 The receiver measures 60 x 43 x 27 mm. It is installed between the power supply and the device. It is easily fixed to the board with screws. You can easily install it to control the lights or the socket. No wiring required. 【Multiplayer Control】 Each receiver can store about 5 wireless switches. So you can share the switches with your family. You can remotely control all the devices connected to the receiver. 【High-quality switch】 The self-generating wireless switch can be operated more than 200,000 times. No battery required. Safe and waterproof, it can be