The Seeit 1-channel relay module enables control of various appliances and equipment through its relay. It can be controlled directly via a remote control switch operating at 433MHz, with both receiver and transmitter included in the device. Installation is straightforward, connect power and the device to the screw terminal block, and pair the remote control with the receiver switch module by pressing the learning button on the relay module board. The module operates with a wide supply voltage range from 5Vdc to 30Vdc, providing flexibility in power sources.