The KSTAR 1200VA Offline UPS Has a Built-In 230V Input Voltage, 230 (+/-10%) Output Voltage, and 50 Hz Frequency. KSTAR 1200VA Offline UPS Has A Typical 4-8ms, 13ms Max Transfer Rate, 24V Battery With 7.5 Weight. It has intelligent battery charging and discharging management, overload protection, an uninterruptible power supply, and generator compatibility. LED indicators are present on this offline UPS. The KSTAR 1200VA Offline UPS comes with a 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.