This programmable electronic thermostat by Stelpro® is designed specifically for fan heaters. Compatible with forced-air units, it includes advanced features such as the Boost, Lobby and Eco modes. The Boost mode allows a rapid temperature rise, while the Lobby mode compensates for fast temperature drops. The Eco mode provides a more energy-efficient setpoint that is activated with just one click. The temperature is displayed in Celsius or Fahrenheit and it is sensed by a thermistor for superior accuracy. This product is backed by a 3-year limited warranty.