Can I use this sensor in life-safety or smoke detection applications

The 354081 is the replacement sensor probe only

single-temperature regulation in complex heating and cooling sequences

Test for a minimum of 350mV at the connector terminals before assuming the valve itself has failed

Lochinvar & A.O. Smith 100109724 Valve 318820-201 Can I use this sensorThe Lochinvar & A. O. Smith 100109724 Valve is a direct fit OEM replacement gas control designed specifically for high efficiency water heaters and residential power vent boiler systems. This natural gas valve operates on a 20V ignition circuit, featuring a 1 2" NPT inlet and a factory set 4" WC manifold pressure to ensure precise fuel to air ratios and stable combustion cycles. Engineering specifications for the 100109724 include a 1 1 4" shank