High power factor up to 1 Pure sine wave output for sensitive and motor loads Built-in MPPT solar charger, Max. 150VDC PV open circuit voltage Smart LCD setting(Working mode, AC charge current/voltage and etc.) Auto switch between utility AC and battery within 8 millisecond as U.P.S Manual switch priority power source between battery and utility AC. Wifi and RS232 available. Cellphone APP for easy monitoring. Optimize battery charging by equalization function