1)ups system 2)Big blue screen display. 3)Wide input range and DC start 4)19 inch line interactive ... other surveillance equipments. include:mains status,UPS working status,system setup,menu operation, remoted control and self-diagnostic, ... °CEnvironment Humidity:< 95% non-condensingSafety standard:IEC 62040Software Start/ShutdownYesDisplay:LED Inverter running,voltage change,battery,fault,loadLCD ...