Y-700 series ATS controller is intelligent dual-supply switch module,which integrates a programmable function,automatic measurement,LCD display,and digital communication.It combines digital,intelligent,networking,measurement and control process automation, disoperation,in order to reduce the faults during operation.It is the best ideal option in ATS. Y-700 series ATS controller is made of microprocessor as its core,can accurately detect extended-spectrum 2-way-3-phase voltage and also make accurate judgment and output passive control switch under the abnormal voltage(over and under voltage,miss phase and over and under frequency). This controller has full consideration in various application of ATS(automatic transfer system)can be directly used for Intelligent ATS,Contactor ATS,Circuit Break ATS etc.It have compact structure,advanced circuits,simple wiring and high reliability,be widely used in Electric power, Telecommunications,Petroleum,Coal,metallurgy,Railways,Municipal,Intelligent building, Electrical devices,Automaticcontrol and Testing system etc.