Invo (INH INUP3000/LI) Line interactive UPS 3000VA/2100W - AVR - Noise Filtering - Black Batteries: 4x 12v / 9Ah Sealed Lead-Acid Battery Waveform: Sine wave (Mains), Modified Sine Wave (Battery) Output Voltage: 48VDC Frequency: 50/60Hz ± 1% Battery Power Factor: 0.6 Recharge: Up to 5hrs Sockets: 2x Shuko Sockets Surge: RJ11 & RJ45 for Modem and LAN Communication: RS232 / USB - Noise <45db Protection: User/resettable circuit breaker / fuse Warranty: One Year Warranty (Batteries 6 months warranty)