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37H94 is identical to 37H9401
Can this thermostat be used in dual-element systems
It features a robust electrode system and integrated protection circuitry
This model is set to 250/190 PSI
If your system requires pressure regulation at the valve
System Sensor D4120W Detector Els PW 17895 37H94 is identical to 37H9401The System Sensor D4120W is a high performance 4 wire photoelectric duct smoke detector specifically engineered for harsh environments and outdoor rooftop HVAC installations. This air duct smoke detector features a NEMA 4 watertight enclosure, providing superior protection against windblown dust, rain, and splashing water. Utilizing integrated low flow technology, the unit operates efficiently in airflow speeds ranging from 100 to 4,000 feet per
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