and 1/2 inch Watts 009 and LF009 models

Constructed with corrosion-resistant materials for extended service life in harsh chemical environments

ensuring consistent millivolt output within the standard 22-30mV range

the switch breaks the circuit to prevent equipment damage and ensure safe operation

ensuring seamless integration with original valve hardware

Fenwal 35-725903-997 Remote Sensor R-410A and 1/2 inch Watts 009The Fenwal 35 725903 997 Remote Sensor is a critical diagnostic and flame monitoring component designed for integration with Fenwal series ignition controls, specifically the Mark 10DX 117 and 35 72 series boards. Engineered for high temperature ionization sensing, this probe monitors flame conductivity to ensure safe and reliable furnace operation. Contractors typically deploy this surface mount flame sensor in commercial and residential HVACR