Wireless Remote Control: Control your electrical applications with the wall transmitter within the required range. No WiFi/Battery to Control: With the self-generation function of the wall panel transmitter switch, you can remotely control the devices connected to the RF433 relay receivers without WiFi or battery, as long as the switch matches the receiver. In addition, the rocker push button allows great convenience in your smart life. Multifunctional Switch: One wall panel remote transmitter switch is able to control multiple RF433 relay receivers, and multiple wall panel remote transmitter switches can also control one RF relay receiver at the same time. Cut the switch with the included double-sided adhesive. Attention: The RF433 relay receiver and the wall panel transmitter remote control switch must be used with the same type. So you cannot buy a receiver or switch on its own or use the standalone wall panel transmitter to connect to another type of receiver.