Robertshaw RS8110 Digital Non-Programmable Wall Thermostat

A large easy-to-read 4.6 square-inch clear digital LCD backlit display. Quick-access menu buttons allow for very easy adjustments. Battery change indicator alert makes changing batteries a breeze with our front load access battery compartment, no need to remove thermostat from base. For use with 24 Vac systems: Central gas, electric or oil furnaces, heat pump systems without auxillary or emergency heat, 750 Millivolt. Does not work with Multi-Stage systems or 120/240v electric baseboard.