Description Reviews Description Flexible averaging duct sensor with a 100K ohm NTC sensing element. This unit has a 6-foot (182 cm) probe. View AllClose
Add to Cart Siemens 540-258 Siemens MSRP: Now: $22.69 Was: This Surface Mounted Pipe Thermistor Sensor measures 1.25" and features clamps and provides input for cost-effective, accurate temperature sensing via an 18 AWG twisted, shielded cable pair. The... 540-258
Add to Cart Siemens 540-739 Siemens MSRP: Now: $84.09 Was: 10K Ohm Duct Temperature Sensor, with 18-in Probe 540-739
Add to Cart Siemens 540-984 Siemens MSRP: Now: $14.20 Was: Metal flush-mount room temperature sensor with 10K, Type II thermistor. This unit is self-contained, non-intrusive, and tamper-resistant. 540-984