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45UV5-1007
provided the OAO enclosure receives proper airflow
including additional auxiliary contacts and timers
What residential units use this relay
Markel 05460702 Switch 321042-401 45UV5-1007The Markel 05460702 is a field proven air flow switch designed to provide precise differential pressure monitoring in heating and cooling applications. As the direct replacement for the legacy MRH 1505 DO, this switch is a critical safety component that confirms positive airflow within a duct before allowing heat kits or compressors to engage. Engineered for low pressure environments, it features a fixed setpoint of 0. 5" WC (water column), ensuring
