This instruction manual introduces the use of SGMuCH2 remote control switch. The product has 2 control output ports, controlled by relays to control the on and off of AC and DC. It can control the start and stop of devices and motors, the reverse or on and off of switches. There are three working states that can be freely set (interlock, non-interlock, self-locking). The single-chip computer decodes and stores the encoding information. Intelligent learning address code and key code, very convenient to use. Typical applications include multi-way electric doors, windows, lifting equipment, industrial control, security industry, etc. Together with the remote controller, it can form a complete set of wireless intelligent remote control system, which is very versatile.