Wireless Remote Control: Control your electrical applications with the wall transmitter within the required range. Multifunctional Switch: One wall panel remote transmitter switch is capable of controlling multiple 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 tape. Attention: The 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 alone or use the standalone wall panel transmitter to connect to another type of receiver.