1.GU641B DIESEL GENSET CONTROLLER 2.AUTOMATIC START 3.GOOD QUALITY, ... , Low pressure, High temperature, Overspeed, Underspeed, High voltage,Low voltage, Overcurrent, 5,Standby input warning.6,Fail to start ... pressure, High temperature, Over speed, Underspeed, High voltage, Low voltage, Overcurrent, Standby output alarm and stop protection.7, ... indicator lamp. Harsen GU641B Diesel generator Controller