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This OEM replacement part serves as the central intelligence hub
it provides the necessary structural rigidity to support 50/60 Hz HVAC blower motors
this module interprets 24VAC signals from the furnace control board to modulate airflow based on real-time heating or cooling demands
The 12-200 series is specifically designed for steam and should not be used in water or liquid service applications
375 orifice diameter is precision-machined to facilitate the correct exhaust velocity
Lennox 76M31 Sensor 321702-401 This OEM replacement part servesThe Lennox 76M31 is a high precision return air duct relative humidity sensor engineered for demanding commercial and industrial HVACR applications. As a non communicating duct mount RH sensor, it provides critical real time moisture data to the Lennox Prodigy and CORE unit controllers, essential for managing Humiditrol reheat systems and supermarket humidity control. Designed for technical reliability, this 24VAC HVAC humidity sensor features a
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