| > Conference Phones | The ND100 UPS unit 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 sine wave to provide sufficient runtime for computer system shutdown using the PowerShield software supplied as standard. The UPS also incorporates a filtered socket for PC network and telephone line cable protection. |