The NetPower series includes the 600-2000VA models and uses digital Line Interactive (VI) technology. The load is powered from the mains through an AVR to stabilise brownout, sag and surge voltages, and EMI filters to suppress spikes and transients. When the mains fails, the load is powered by the inverter with a pseudo sinewave to provide sufficient runtime for computer system shutdown using the PowerShield. – mains power supply stabilisation and filtering (Line Interactive (VI) technology with AVR and filters for atmospheric disturbance suppression). – cold start capability: the UPS can power up without a mains supply present. – high reliability with built-in battery test feature. – supplied with 2 output cables. – USB port.