Programmable Thermostat

This replacement thermostat is compatible with Resideo HONTH2110DH1002 and equivalent models, providing reliable climate control for light commercial and residential HVAC applications. Part of the PRO 2000 series, this horizontal programmable thermostat is engineered for 1 heat/1 cool staging and works seamlessly with conventional systems, heat pump systems without auxiliary heat, and millivolt or hot water heating applications. The unit features dual-power capability, operating on 20-30 VAC through a C-wire connection or alternatively powered by 2-AA batteries for flexible installation options. Its millivolt compatibility extends functionality to systems requiring lower voltage operation. The backlit LCD display clearly shows both ambient and setpoint temperatures with selectable Fahrenheit or Celsius readout, ensuring operator clarity in any lighting condition. Temperature control operates within industry-standard ranges: heating from 40 to 90 degrees Fahrenheit and cooling from 50 to 99 degrees Fahrenheit. The thermostat maintains +/-1 degree Fahrenheit accuracy, meeting precision requirements for consistent comfort and energy efficiency. Its compact horizontal form factor measures 3.44 inches in height by 4.63 inches in width by 1.19 inches in depth, fitting standard wall cavities and control spaces. Finished in Premier White, this thermostat integrates professionally into commercial facilities, office buildings, retail spaces, and residential properties requiring dependable programmable temperature management. It serves as an ideal replacement component for existing Resideo installations or retrofit applications where compatible functionality is required.