Honeywell RTH221B1021/A Programmable Thermostat
- Simply programming - one program for the entire week, up to 4 periods per day
- Precise temperature control of +/-1 deg F for consistent comfort
- Compatible with heating, cooling and heat pump without auxiliary heat
- Does not work with electric baseboard heat (120 to 240 V) multistage HVAC systems
- Easy to read digital display, Fahrenheit or Celsius temperature, 12 or 24 hrs clock
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