... Lock, Window, Blind, Banne, Winch, Bell Feature:Wireless control, easy to install. Control Lights, TVs, Motors, Fans, Cameras, Video signals, Audio ... months)Usage:Button 1~12 of the transmitter is corresponding to the relays 1~12 of the receiver.Setting control mode Latched: ... press button 1 of the transmitter.relay 1 ~ 4 ...