The White Rodgers 70 Series 1F78-151 24V Or Millivolt Single Stage 5/2 Day Digital Programmable Thermostat Horizontal Mount 1H-1C 45-90F is a great choice commonly used to control the temperature of conventional forced air systems or heat pumps in residential and light commercial settings, such as offices, restaurants, or retail stores. They're programmable and allow users to select temperature settings for different times of the day or different days of the week. Battery powered for maximum compatibility. Fossil fuel or electric heat compatible. Large LCD with backlight. Selectable Celsius or Fahrenheit temperature display. Includes O and B terminals. Classic White color.