Emerson Digital 24 Hours Programmable Thermostat with Millivolt Compatible Blue 2" thermostats provide an easy to read 2 inch square backlit display with both heat pump or single stage models available. Easy to see display characters provide a step up from the available 70 series. Product Features: Permanent program retention during power loss Configuration menu allows keypad selection of options Selectable Celsius or Fahrenheit temperature display Millivolt compatible Energy Star 2" display Emerson Climate Technologies is the world"™s leading provider of heating, ventilation, air conditioning, and refrigeration solutions for residential, industrial, and commercial applications. Combining technically superior products and services from industry-leading divisions and brands with global engineering, design, distribution, installation, and monitoring capabilities help Emerson Climate Technologies to create reliable, energy efficient climate systems that improve human comfort, safeguard food, and protect the environment.