Dwyer Instruments 1831-1-RA-S Pressure Switch R-407C Always verify the specific serial

Always verify the specific serial number for exact fitment

Precision Sealing: Provides a robust mechanical connection to prevent carbon monoxide leakage into the mechanical room

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Technicians will find this board essential for restoring HVAC system efficiency when diagnostic codes indicate a failure in the defrost logic or intermittent relay operation

Dwyer Instruments 1831-1-RA-S Pressure Switch R-407C Always verify the specific serialThe Dwyer Instruments 1831 1 RA S Low Differential Pressure Switch is a critical safety component designed for precise HVAC pressure monitoring and air flow verification. This model operates within a set point range of 2. 5 to 9 inches w. c., making it ideal for high static pressure applications where manual intervention is required following a trip. Built with a silicone diaphragm and a rugged Type 1 enclosure, this switch manages a 10 psi maximum