PowerWalker VFD 1000 is a Standby/Off Line UPS which provides secure protection and reliable and cost effective backup power.The UPS can beautomatically started up without AC power supplied. In addition, this UPS provides RJ11/RJ45 surge protection, and green power function for energy saving. Its pro-active audible warning reminds you the abnormal condition and ensures your connected equipment. This UPS provides clean and stable power protection to connected equipment and is perfect for home and small office application.- Simulated sine wave- Auto restart while AC is recovering- Cold start function- RJ11/RJ45 surge protection- Green function for energy saving- Quick Installation- Easy operation- Full Protection: Discharge, Overcharge, Overload