W2,W3 Dual Power Controller is an intelligent control device for dual power automatic switching system (ATS) , which is mainly used to monitor and manage the working state of two power sources (common power supply and standby power supply) , and when the power failure to achieve automatic switching, to ensure that the continuous power supply load. Can adapt to the company’s C-type, Y-type, W-type dual power supply, real-time monitoring of two power three-phase voltage, three-phase current, frequency, power and other parameters, and display it through liquid crystal display and so on.