While this is a genuine Carrier component

the YP100 ensures rapid shutdown during a loss of flame signal

Can I use this on a cold-start boiler

it features an adjustable pressure range of 10 to 25 psi

Lennox 76M31 Sensor 322057-301 While this is a genuineThe Lennox 76M31 is a high precision return air duct relative humidity sensor engineered for demanding commercial and industrial HVACR applications. As a non communicating duct mount RH sensor, it provides critical real time moisture data to the Lennox Prodigy and CORE unit controllers, essential for managing Humiditrol reheat systems and supermarket humidity control. Designed for technical reliability, this 24VAC HVAC humidity sensor features a