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Ships within 48 hours · Estimated delivery Sep 12 - Sep 17
the D1198 is a direct HVAC part replacement for Lennox part number 25J1201 and 7121-8774
If the limit switch is open
Designed specifically for R-410A refrigerant circuits
Whether you are replacing a worn blower pulley or configuring a new centrifugal fan drive
Siemens Building Technology 540-660B Sensor 318172-701 the D1198 is a directThe Siemens 540 660B Sensor is a staple 10K Ohm NTC thermistor designed for precision environmental monitoring in commercial HVAC applications. Engineered for seamless integration with Siemens Terminal Equipment Controllers (TEC) and LONMARK compliant systems, this Type II NTC thermistor offers a reliable sensing range from 55F to 95F. As a veteran grade wall mount room temperature sensor, it features an integrated set point slide and a flush mounted
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