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the 667994403 features a robust frame and provides a direct fit for several legacy models
While both modules belong to the MEP500 series
meaning it utilizes the system's airflow for cooling and is ideal for furnace draft inducer housings
or outdoor air intake
This specific model utilizes NBR seals designed for air and water
Siemens Building Technology 544-577-25 Sensor L99H008 the 667994403 features a robustThe Siemens 544 577 25 Immersion Temperature Sensor is a high precision field device engineered for liquid medium sensing in hydronic and HVAC systems. Built around a Pt 1000 Ohm RTD element (Platinum 375 coefficient), this sensor provides highly accurate resistance to temperature conversion across a wide range from 0F to 250F ( 18C to 121C). This unit features a 2. 5 inch probe length and comes complete with a low profile thermowell, ensuring
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