PowerShield PSG750 SafeGuard 750VA Line Interactive UPS with AVRPowerShield PSG750 SafeGuard 750VA Line Interactive UPS with AVR The PowerShield SafeGuard PSG750 is a 750VA 450W line interactive UPS designed to provide a buffer between your equipment and inconsistent mains power supply. This cost effective, compact device constantly stands guard beside your sensitive equipment, protecting workstations, telephone systems, security applications, and home office setups from power fluctuations and outages. Key