True on-line technology provides all power protection High frequency and double conversion on-line technology Wide input voltage range Advanced PFC technology Pure sine wave output with less than 3% THD Automatic diagnostics & battery checkcheckcheck Self-testing when UPS startup Advanced battery management(ABM) Cold start function(DC power on) Automatic battery charging in UPS off mode Lightning and surge protection (surge energy rating 1050 Joules) Short circuit and overload protection Fan speed auto control when loads varies Optional extension battery pack EMI/RFI noise filter Smart RS232 communication with monitoring software Schedule shutdown & restartstartstart Large LCD display