MaxGreen MG-LI-EAP-650VA Offline UPS comes with 220Vac Input Voltage, 140-290VAC Input Voltage Range, 50 Hz Frequency, 220Vac Output Voltage. This offline UPS, It also features with ±10% (Bat Mode) AC Voltage Regulation, 50Hz ± 1Hz (Bat Mode) Frequency Range, and a 2-6ms Transfer time Typically that provides you good performance. The MaxGreen MG-LI-EAP-650VA Offline UPS also has Waveform Simulated Sine Wave (Bat Mode), Battery Internal maintenance-free lead-acid (Battery Type & Number 12V/9Ah*1). This UPS provides 4-6 hours recover time to 90% capacity, Full protection Short circuit, Overload, Battery discharge and overcharge, Surge protection. This UPS also has Humidity 0-90% Relative Humidity 0-40 ƒ (Non-condensing) and Noise Level of Less than 40dB. The MaxGreen MG-LI-EAP-650VA Offline UPS comes with 01 year warranty. Under the following conditions, the warranty would not be provided:• UPS burning due to thunder, abnormal overload, insect entrance and others.• If ambient temperature should not be maintained at 20 to 26 degrees Celsius with proper dehumidification. (24/7)• If the product is placed in a dusty and damp place.• In the absence of Generator connectivity Without proper battery charge, the warranty will be void.• Battery swelling and overcharging due to the wrong system voltage setting of the UPS.