Thermistors Duct Sensor configuration

View Details Veris TDDAM20 Temp | Duct | 8" | Xmtr | 4-20mA | 32-122F  | Blackhawk Supply
$12.69 each
View Details Siemens 540-244-18 Rigid Averaging Duct Sensor, 100K Ohm; 18-Inch  | Blackhawk Supply
$106.56 each
View Details Siemens QFM3171D DUCT RH & TMP SNSR, 4-20mA, 2%, DISPLAY  | Blackhawk Supply
$690.46 each
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