Provides precise line voltage control of resistive rated electric heating equipment including fan forced and baseboard electric heaters. For control of resistive rated baseboard electric heaters. Extremely sensitive to temperature changes. Replaces virtually all standard wall mounted line voltage thermostats. Color coded leads allow easy installation. Include long lasting Micro Switch mechanism. Rugged plastic mounting base. Cover thermometer indicates room temperature. Well suited for upgrades and high end new construction. Mounts directly on a vertical 2 x 4 inch outlet box, or on a 4 x 4 inch outlet box.