Wireless remote control: Control your electrical applications with the wall transmitter within the required range No WiFi / battery control: Thanks to the auto-generation function of the wall panel transmitter switch, you can remotely control the devices connected to the relay receivers RF433 without Wi-Fi and battery, as long as the switch matches the receiver In addition, the toggle push button provides great convenience in your smart life Multifunctional Switch: A wall panel remote switch is Capable of controlling multiple RF433 relay receivers, and multiple remote wall panel transmitter switches can also control one RF relay receiver at the same time Cut off the switch with the included double-sided adhesive Customer protection : 60-day money-back guarantee and return for any reason within 15 days This CCC, RoHS reference Attention: RF433 Relay Receiver and 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 stand-alone wall panel transmitter to connect another type of receiver