[[INPUT]] Rated voltage: 208 V / 220 V / 230 V / 240 Vac Voltage range: 110 - 176 Vac (linear derating between 50% and 100% load ), 176 - 280 Vac (no derating), 280 - 300 Vac (derating 50%) Frequency: 40 - 70 Hz (auto-sense) Power factor: >= 0.99 Bypass voltage range: 25% +15% (settable) Total Harmonic Distortion (THDi) <= 6% [[OUTPUT]] Voltage: 208 V / 220 V / 230 V / 240 Vac (settable via LCD) Voltage regulation : 1 +- Waveform: Sinusoidal Crest factor: <= 2% (linear load); <= 5% (non-linear load) Transfer time: Mains mode to battery mode: 0 ms, Inverter mode to bypass mode: 4 ms (typical) Overload capability: 105% - 125%: transfer to bypass in 1 min, 125% - 150%: transfer to bypass in 30 s, > 150%: transfer to bypass in 300 ms [[EFFICIENCY]] Mains mode: >= 90% Battery mode: >= 85% ECO mode: >= 95% [[BATTERIES]] DC voltage: 24 V Inbuilt battery: 2 x12v 9Ah Charging current (max.): 1A Recharge time : 8 h TYPE: VRLA sealed lead acid maintenance free ALARMS: On Utility failure / Low battery / Overload / UPS fault [[COMMUNICATIONS]] RS232 (standard) / USB (optional) : Supports Windows? 98 / 2000 / 2003 / XP / Vista / 2008 / Windows? 7 / 8 / 10 SNMP (optional): Power management from SNMP manager and web browser [[OTHER SPECS]] Output Power Plugs: 2 Schuko (3 IEC optional) Operating temperature: 0 - 40 Storage temperature: from -40 to 70 °C (without batteries) Relative Humidity: 0 - 95% (non-condensing) Altitude: <= 1000m, derating 1% for each additional 100m IP rating: IP20 Noise level: <= 50 dB (1m) Dimensions: 144x336x214 Packaged dimensions: 232x417x318 Net weight (kg): 9.5