Line Interactive UPS 650/750/850/1000VA The SmartCompact UPS was designed to back up personal computers, servers, printers, fax machines, security and alarm systems, telephone exchanges, communication equipment, and more. An automatic voltage regulator protects the equipment from voltage variations, spikes, and frequency interferences, and extends the life of the batteries. RJ11 input accommodates modems, routers, and other sensitive equipment. Features - Microprocessor control - Cold start capability - Automatic frequency detection - Self-diagnostics at Power On - Alarm can be silenced manually - Built-in AVR for wide input range - Green power design and green mode function