DK 300 Dual-Volt 600VA-2000VA Line interactive UPS is typically used in South America, with two input 120V (90V-148V) and 220V (166V-276V), to protect and power certain equipment, such as personal computers, small scale exchange, POS machines ect. It provides comprehensive power protection against surges and spikes, and also provides pure voltage with Boost and Buck AVR. It power equipment sufficient run time without any objectionable dip or brownout to that device. And it is the simplicity and low costs. Installation is easy and quick.