Items related to Honeywell RTH221B1021/A 1 Week Programmable Thermostat
by Honeywell One program for the entire week-4 periods per day Digital display Compatible with heating, cooling and heat pumps without auxiliary heat, Does not work with electric baseboard heat (120-240V) multistage HVAC systems Accurate temperature control of +/-1-Degree F for consistent comfort Display options: Fahrenheit or Celsius temperature display, 12 or 24 hour clock |