Siemens QAM2030.750 Series Duct Averaging 24' Temp Sensor, 10K Ohm NTC Type 2

Siemens QAM2030.750 Series Duct Averaging 24' Temp Sensor, 10K Ohm NTC Type 2. Siemens QAM2xxx Duct Temperature Sensors, Duct Averaging and Probes. 18" rigid probe, 4" and 8" duct probe and 8-16-24' duct averaging with 1K or 10K Ohm Nickel or Platinum.