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Honeywell Home C7735A1000 is a discharge air temperature sensor for equipment interface modules (EMM) that senses return/discharge duct air temperature and provides backup control if a wireless thermostat loses power. It mounts on the return duct, works with compatible interface modules and thermostats, and is intended for high and low temperature limit protection and basic IAQ or delta-T diagnostics.
Duct-mounted discharge/return air temperature sensor for use with Honeywell equipment interface modules; includes mounting hardware and provides backup control when thermostat power is lost.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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