It is for heat only and is off white in color. It works on 24 volt or multi-volt heating systems and replaces round, vertical or horizontal thermostats.
Adjustable thermometer allows matching of thermometer and temperature setting.
Includes a "night off" setting. The off is enabled by sliding the top control all the way to the left until it clicks.
3-1/2" high x 2-7/8" wide.