Dual voltage tower UPS system maintains 120V nominal output when fed with either North American 120V or international 230V input power. Built-in C14 inlet can be used with a variety of user-supplied international high- and low-voltage input cables. Network-grade AC surge suppression protects servers, networking accessories and telecommunications equipment from damage and performance problems caused by transient surges. USB and serial-enabled DB9 ports support remote monitoring of UPS and site power conditions. Audible alarm and front panel LEDs indicate status of line power, battery power, battery low/replace, voltage regulation and load level.