The Defender range uses Automatic Voltage Regulation (AVR) to minimise the effects of fluctuations in input voltage protecting your valuable equipment from power line disturbances | The stylish LCD display, user replaceable batteries and Australian sockets makes the defender the complete package at this level | Stylish and informative LCD display | Excellent microprocessor control guarantees high reliability | Australian outlets for UPS and surge protection | Boost and buck AVR for voltage stabilisation | User replaceable batteries | silent Operation (No fans included) | Auto restart while AC is recovering | Off-mode charging | Cold start function | USB communication with sophisticated netguard software