The controller is a mains/gens ATS controller, which can automatically or manually control the ATS dual power switch, suitable for the application of one mains and one power generation. The LCD screen can display various faults at the same time. Once the generator does not run normally, it can effectively achieve protection. It can display single-phase power generation voltage, power generation frequency, mains voltage, and mains frequency; the working mode (manual, automatic, test, shutdown) indicates the working status of the ATS switch through the LED indicator. There are Chinese/English interface options, more language can be set according to user's request. All the parameters can be configured through the front face buttons or use programmable interface by USB to adjust via PC. It has compact structure, advanced circuits, simple wiring and high reliability, It can be widely used in various types of power systems. Color:Black Material:ABS Package Contents: 1 x Auto Transfer Switch