01. The compound switch is connected by thyristor and magnetic hold relay, Realization of Voltage Zero-Crossing and current Zero-Crossing, Make the compound switch have the advantage of ZCS switching on and off at the moment of switch on and off, The effect of no inrush current and no harmonic injection can be achieved. 02. Microelectronic hardware and software control and intelligent control of silicon controlled , Operation of relays and input power and loads,so it has perfect protection function. The Intelligent Control Technology with traps and the latest Electronic components, Compared with similar products, High performance advantage in inrush current and safety reliability. 03. Photoelectric isolation of input signal and compound switch: Strong anti-interference ability, safe and reliable work. 04. Power consumption is little: Due to the use of magnetic retention relays, The control device only consumes electricity at the moment of switching, At ordinary times no electricity is consumed, Due to low contact resistance of magnetic hold relay,and thus it doesnâ??t heat, In this way, the cost is reduced without adding heat sink or fan. Completely avoiding SCR burning, At the same time, it does not cause harm to other electrical appliances running on the same machine, which really achieves the purpose of saving energy and reducing consumption.