Economy thermostats that provide reliable line voltage control of resistive rated electric heating equipment. Snap-action switch makes heating circuit on temperature fall. Economical. Replace virtually any two-wire (T410A) or four-wire (T410B) line voltage wall mounted electric heating thermostat. Easy to install; 6 inch. (150 mm) color coded leads. Include long-lasting Micro Switch™ mechanism. Rugged, plastic mounting base and one-piece cover with vents. Ideally suited to new construction applications.