1. Wireless Remote Control: Control your electrical applications with the wall transmitter within the required range; The round RF and Wifi receiver with its own power supply is designed as a mini module size for each UK/EU/US cable box for much more compatibility. 2. No Battery to Control: With the self-generation function of the wall remote control switch, you can remotely control the devices connected to the RF433 or Wifi relay receivers without battery as long as the switch matches the receiver in prepayment. The rocker switch also allows much convenience for your smart life. 3. Multi-function Switch: One wall remote transmitter switch can control multiple RF433/WiFi relay receivers, and multiple wall remote transmitter switches can also control one RF relay receiver at the same time. Stick the switch in place with the provided double-sided tape. 4. Various Uses: Use the RF receiver directly on your light bulb by wiring and then controlling with the transmitter controller; or