UPS Smart-Save Online SRV Systeme Electric 3000 VA, 2U convertible form factor, 230 V, 6 IEC C13 + 1xC19 sockets, SmartSlot, LCD, USB HID Form factor: Convertible; Output connections (backup power): 6 IEC 60320 C13 + 1 IEC 60320 C19; Programmable output sockets: 3 IEC 60320 C13; SNMP card: Optional; Harmonic Distortion (THD): ?3% (linear load), ?6% (non-linear load); Switching time from mains to battery, ms: 0 ms; Switching time from inverter to bypass, ms: 4 ms; Efficiency: Mains operation - 90%, Battery operation - 88%; Battery type: Lead-acid; Battery installation: External battery pack; Form Factor: Convertible; Indication: Input Voltage, Output Voltage, Mains operation, Battery Operation, Overload, Load Level, Low Battery, Battery Level, Discharge Timer, Bypass, Malfunction, No sound; Alerts: Battery operation - Sounding every 4 seconds, Low battery - Sound every second, Overload - Sound every 0.5 seconds, Malfunction - Continuous sound; Converter mode; ECO mode for energy saving; Compatibility with the generator; Automatic restart when power is restored; "Cold" start; Charging in the off state; Fuse: Automatic; Battery replacement by the user; Internal bypass; Hot battery replacement; Programmable output sockets