UPS Ultra Power 1500VA/900W (3 steps of AVR, CPU controlled, USB) metal case, LCD display---UPS1500MC 1500VA/900W Front Panel: LCD DisplayAVR: 3 steps of AVR, CPU controlledInput voltage range: 145~290Vac±5VacInput frequency range: 50Hz / 60Hz (Auto sensing)Output voltage range: 200~255VacOutput frequency (DC mode): 50±0.5Hz / 60±0.5HzWave form: PWM (DC Mode)Transfer time: Typical 2~6ms, Max.10ms.3 Germany SocketsBattery: 2 pcs*12V9AhCharging period: 4~6 hours recover to 90% capacityPROTECTION:1. Battery low voltage protection 2. Overload protection3. Short circuit protectionFUNCTION:1. Auto re-starts when AC recovers2. Silence setup3. Automatic charging (offline charging)Unit dimension (mm): 350*120*188mmNet weight (kg): 12kg