يو بي اس - High frequency on-line double conversion technology. DSP (Digital signal processors) control technology. Active power factor correction (APFC), input power factor up to 0.99 Output power factor 0.9 Wide input voltage range (110 V ~ 300 Vac) and frequency range (40 ~ 70 Hz) . Auto sensing frequency. 50 / 60 Hz frequency conversion Multiple functions settable via LCD: output voltage, EOD, auto-start, bypass mode, ECO mode and frequency conversion mode. Cold start Rear ventilation design and variable speed fan Effective software and hardware protection Quick and stable charging, 90% capacity restoredin 3 h (standard model UPS) Linear derating in low voltage input reducing battery discharging times Settable delayed start when power is restored Advanced battery management (ABM) Multi-platform communications: RS232 (standard), USB / RS485 / SNMP .