This White-Rodgers 24-Hour Digital Thermostat uses the technology of a solid-state microcomputer to provide precise time/temperature control as well as offer you the flexibility to design heating and cooling programs that fit your needs. # Features: Simultaneous heat and cool program storage # Preprogrammed temperature control # Four separate time/temperature settings # LCD continuously displays setpoint and alternately displays time and room temperature # Temperature override until next program period # Manual program override (HOLD temperature) # Temporary HOLD # ?F/?C convertibility # Temperature range 45? to 90?F # RC RH W Y G O and B terminals # B and O terminals for single stage heat pumps (no auxiliary heat) or damper operation # Program storage in case of power loss # 2 ?AA? Energizer? alkaline batteries included