Rated at 400 Btu, thermoelectric Model AAC-140B-4XT cools small electronic packages directly from 120/240 Vac source. Air conditioner expels power supply waste heat with outside exhaust air and creates less stress on cooling elements. It operates on nominal 150 Vac and performs equally well over 100-130 Vac. Nominal 230 Vac unit with internal regulator enables operation in 200-260 Vac range. System weighs 15 lb, mounts vertically or horizontally, and withstands shock.