Catastrophic losses of data, productivity, and images can happen due to unstable power. It's a potential cause of major loss for all kinds of organizations whose business depends upon computers and other electronic infrastructure. The Powercom E-Book series UPS provides complete protection for network systems and advanced servers. This UPS provides 500VA output and has power outlets to protect four devices at the same time. This UPS provides precise, clean and stable computer grade power at all times. It’s the guardian that will shield against lightning, electrical noise, over/under voltage, brownouts and blackouts. Series: E-Book Input Voltage Range: 100V +20% / -15% at line input, 110V / 115V +/- 20% at line input Input Frequency: 50 or 60 Hz+/-10% (auto sensing) Output Voltage: Simulated sine wave at 100V/110V/115V/200V/240V +/- 5% Outlets: 4 Outlet Type: 3 UPS Sockets and 1 Bypass Socket Battery Recharge Time: 4 Hours Alarms: Battery Backup: Slow beeping sound every 4 seconds Battery Low: Rapid beeping sound every second Overload: Continue beeping sound, Overload LED always On Battery 105% load: Continue beeping sound every 4 seconds