Markel 05460702 Switch 319848-301 The Aaon R64420 Signal Conditioner

The Aaon R64420 Signal Conditioner is a high-precision electrical component engineered for seamless integration within HVACR control systems

using this HVAC safety switch ensures your furnace meets factory specifications for safety and efficiency

this model is a direct functional equivalent to the Barber Colman 2474-140 and MK-574-51

Precise Suction Monitoring: Ensures accurate refrigerant pressure readings to prevent coil freeze-ups and maintain superheat settings

and essential mounting hardware in a single configuration

Markel 05460702 Switch 319848-301 The Aaon R64420 Signal ConditionerThe 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