Siemens Building Technology 540-660B Sensor 318973-401 1 1/8" ODT x 1

1 1/8" ODT x 1 1/8" ODF copper connections for secure

providing superior protection against corrosion and moisture in mechanical rooms

as capacitors are often sold separately or integrated depending on the production year

Enhanced Airflow Efficiency: Forward-curved blade geometry provides superior air movement for consistent climate control and HVAC part performance

providing a reliable solution for correcting ignition failures and blower communication issues

Siemens Building Technology 540-660B Sensor 318973-401 1 1/8" ODT x 1The 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