PowerWalker VFI 2000 ATPowerWalker VFI 1000-3000 AT is an Online UPS series with double conversion technology, designed to safeguard your mission-critical equipment. Despite its professional application, the VFI AT series is easy to operate and comes inside a compact and economic package. Rather uniquely among Online UPS, the VFI AT series features outlet sockets for Type F, Type E and Type G plugs. This broadens its usability and allows for different types of application. Multiple optional accessories such as external battery packs and communication cards, enhance the functionality of the UPS and allow for a greater backup time.