Lennox 21Z09 Sensor Kit 319825-402 Rated for ANSI Class 250

Rated for ANSI Class 250 static pressure

The MT1-28 is frequently paired with Maxitrol TS121 and TS114 series sensors to provide feedback to the electronic amplifier for precise modulation

this model is specifically designed for R410A systems and POE oil compatibility

White-Rodgers 1A11-2 36/90F SPDT Line V Fan Coil Non-Programmable Tstat Line Voltage

Using this assembly on a 115V circuit will result in motor failure and potential damage to the control board

Lennox 21Z09 Sensor Kit 319825-402 Rated for ANSI Class 250The Lennox 21Z09 Enthalpy Sensor Kit (also identified as 603364 35) is a critical diagnostic and control component for commercial HVAC rooftop units. Operating as a high precision dual sensing device, this enthalpy sensor replacement monitors both sensible temperature and relative humidity to determine the total heat content of the air. This data is essential for economizer air side control, allowing the system to utilize outdoor air for free cooling