The PowerShield Defender PSD650 is a 650VA Line Interactive UPS. This brick style UPS provides simultaneous battery backup and surge protection via Australian output sockets. The Defender range utilises Automatic Voltage Regulation (AVR) to minimise the effects of fluctuations in input voltage protecting your valuable equipment from power line disturbances. With a stylish LCD display and user replaceable batteries, this UPS is ideal for applications that include the electrical protection of computers, telephone systems, Point of Sale or other small CCTV equipment.