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THERMOSTAT Ht / Cl / Prg RTH221B
- SKU: 0177139
- MPN: RTH221B1039/E1
- UPC:
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One program with 4 program periods per day. For use with central gas, oil or electric furnaces and AC. For millivolt systems. All control buttons on face of the product. Soft touch buttons, one touch hold. Precise temperature control (+/-1 degree F).
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