"Featuring with the best-in-class fireproof plastic housing, the BU series UPS provides an outstanding fire-resistance capability to minimize the possible damages of valuable assets in case of any fire incident. With CyberPower's innovative Battery Management Technology, it significantly increases the battery efficiency therefore a longer battery life. The configurable alarm allows users to switch ON/OFF the audible alarm when UPS is on battery mode to avoid any disturbance. Its generator compatibility provides an extensive application scenario during power outage. With the built-in Automatic Voltage Regulation (AVR) stabilizes the AC signal and maintains a safe voltage, it allows the UPS to maintain safe power levels through Double Boost & Single Buck function for the connected equipment without resorting to battery power. Warranty - 2 years on UPS | 2 years on battery Features & Benefits： Automatic Voltage Regulation (AVR) Auto-Restart/Auto-Charge Generator Compatible Fire-Resistance Capability Configurable Alarm Battery Management Technology Flexible Placement Model BU600E-IN Capacity (VA/Watts) 600/360 Input Voltage Range 140~300Vac Nominal Frequency 50Hz / 60 Hz +/- 3(Auto-sensing) Output On Battery Output Voltage Simulated Sine Wave at 220Vac +/-5% On Battery Output Frequency 50Hz +/- 1% Overload Protection Breaker / Fuse Physical Total # of UPS Receptacles 3 Dimensions(H x W x D)(mm) 91.5 x 158 x 240 Weight(kg) 3.8 Battery Sealed Maintenance Free Lead Acid Battery RBP0043 x1 Typical Recharge Time 8 Hours Runtime 50W/120W Load(mins) 31/18 Status Indicators Indicators Power On / Using Battery Audible Alarms On Battery, Low Battery, Overload, Fault Management Auto-Charge Yes Auto-Restart Yes "