Coolers of Auto-Ranging Series (M105), including ThermoTEC 141, 145, and 151 Series, features auto ranging power capability for operation from 120 or 240 AC power. Auto ranging feature also automatically tracks and optimizes available voltage to provide unimpeded cooling. Manufactured to NEMA 4X standards, air conditioners operate at temperatures up to 140°F and are available with heating option. Design allows integration into existing enclosures or can be configured complete with enclosure.