【Excellent Design】 433 MHz RF self-generating wireless light switch. You can remotely turn lights or other devices connected to the relay receiver on/off via the kinetic wireless switch. Stable and reliable performance with high receiving sensitivity (> -110dBm). Radio frequency signal transmission. A strong signal can penetrate walls, floors, doors, etc. It can be controlled from a distance of 30-50 meters indoors. 【Easy to Install】 The mini receiver size is 60*43*27 mm. It installs between the power supply and the device. It can be easily mounted on the panel using screws. You can easily install it to control lights or outlets. No wiring is required. 【Multi-Player Control】 Each receiver can store approximately 5 wireless switches. This allows you to share the switches with the family. Everyone can remotely control the device connected to the receiver. 【High-Quality Switch】 The self-powered wireless switch can withstand over 200,000 clicks. No battery required. Safe and waterproof,