PowerWalker VFD 600, fully Stand by UPS system, provides high performance, reliable and cost-effective backup power protection. It also equipped DC start function and overload protection. That is the ideal solution for all day to day computing.- Microprocessor control guarantees high reliability.- Phone/Modem line surge Protection function- Adopt on-line UPS high frequency technology to achieve a technical breakthrough of 40KHz operating frequency.- Built-in DC start function enables UPS to be started up without AC power supplied.- Ultra slim design with ultra light weight- Automatic detection- Auto restart while AC recovery- Simple and Easy installation & Operation- Self diagnosis to ensure longer battery life