POWER GUARD 650VA PS OFFLINE UPS

Features : Automatic voltage regulation (AVR) Wide Input Voltage Range Option High/Low Voltage Protection Overload/Short Protection Cool start computer even there is no main power Automatic recharge even UPS is off Beeping Alarm LED indicator Frequency Selection Automatically Intelligent Battery Management Compatibility with generators SPECIFICATION : Power (VA/W) Requirements : 650 VA / 390W INPUT :  Voltage Range : 145-280VAC Frequency : 50/60Hz /-5% OUTPUT : Voltage (Inverter Mode) : 220/230VAC /-10% Capacity  390W Frequency (Inverter Mode): 50/60Hz /-5% TRANSFER TIME :  Inverter to Bypass: 2~4 ms (Typical) Waveform (Batt. Mode) : Pure Sine Wave EFFICIENCY :  To AC Mode 87% To Battery Mode 83% BATTERY : Type Lead-Acid Maintenance-Free DC Bus 12V 8.2Ah Number 1 PCS Recharge time 6 hours up to 90% capacity Back up time 05-20 mins (Depending on load) Environmental :  Temperature -5-45 Degree C Humidity 20% to 90%