UPS Ultra Power 550VA/300W (1 step of AVR)- metal case---UPS550ME 500VA/300WFront panel: LEDInput voltage range: 175~265±5VacInput frequency range: 50Hz / 60Hz (Auto sensing)Output voltage range: 175~265±5VacOutput frequency (DC mode): 50HzWave form: PWM (DC Mode)Transfer time: Typical 2~6ms, Max.10ms.2 Germany socketsBattery: 1pc*12V4AhCharging period: 4~6 hours recover to 90% capacityPROTECTION:1. Battery low voltage protection 2. Overload protection3. Short circuit protectionUnit dimension (mm): 260*85*140mmNet weight (kg): 4kg