2KVA / 1800W Display: LCD Interface: RS-232, USB, SNMP Slot Battery: 6pcs 12V7.5AH Input voltage range: 220V: 115~300Vac Frequency: 220V: 40~60Hz, Adjustable by software Output voltage range: 220V: 220±2%Vac Wave form: Sine Wave Transfer time: 0 ms Overload capability: 110%~150% lasts for 30 seconds then transfer to bypass output, over 150% lasts for 300 milliseconds. Protections: 1. Auto re-starts when AC recovers 2. Silence setup 3. Automatic charging (offline charging) 4. Battery low voltage protection 5. Overload & Short circuit protection Net weight: 30.5 kg