Maxitrol TS121 Sensor Els PW 17895 this model maintains the critical

this model maintains the critical 1/4-turn operation with internal rotation stops

It is factory-set to trigger at 75 degrees Fahrenheit and cannot be manually calibrated in the field

Techs often specify the 8221210003 for its robust housing and consistent repeatability in demanding environments

or physical signs of overheating/swelling of the epoxy housing

Universal Series Compatibility: Designed for direct installation into the terminal box of Marley 1800

Maxitrol TS121 Sensor Els PW 17895 this model maintains the criticalFor veteran technicians servicing indirect fired make up air units, the Maxitrol TS121 discharge air temperature sensor is the critical component for maintaining a stable 55 90F terminal temperature range. Specifically engineered for integration with Selectra Series 20, 21, 30, and 31 modulation systems, this thermistor based sensor delivers a resistance of 4,500 ohms at 77F, providing the Maxitrol amplifier with the sub second response times required