The Power Guard 650VA CS Offline UPS comes with Automatic voltage regulation(AVR), High/ Low Voltage Protection, Overload/ Short Protection Cool features. The Power Guard UPS featured an input voltage range of 145-280VAC and a frequency of 50/60Hz+/-5% and also it offers an output voltage of 220/230VAC+/-10%. It has a transfer time of 2~6 ms (Typical) and a Pure Sine Wave. The Power Guard 650VA UPS is equipped with a Lead-Acid Maintenance-Free battery. It takes a recharge time of 6 hours up to 90% capacity. It can deliver a backup time of 05-40 mins (Depending on load). This UPS indicates AC Mode with Green lighting, Battery Mode with Red lighting, and Over Load Yellow lighting, which helps you to identify the UPS status