Chicago Digital Power Enterprise 3000VA rack/tower UPS, on-line double conversion pure sine wave, 0.9 output power factor, built-in batteries and a wide input voltage range of 60Vac to 150Vac. Input frequency range of 40-70hz selectable output voltage of 110 - 115 - 120 -127Vac. Output frequency 50 or 60Hz +/-0.1Hz. Automatic self-diagnosis, LCD display. Eliminate 99% of electrical problems, integ...