Thermistors Duct Sensor configuration
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![Siemens QAM2020.750 Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 24-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAM2020.750_medium.jpg?v=1720023792)
QAM2020.750 | Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 24-Foot | Siemens
Brand: Siemens
SKU: QAM2020.750
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![Siemens QAM2120.200 Duct Averaging Sensor, 1K Ohm Nickel, 6.5-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAM2120.200_medium.jpg?v=1720023785)
QAM2120.200 | Duct Averaging Sensor, 1K Ohm Nickel, 6.5-Foot | Siemens
Brand: Siemens
SKU: QAM2120.200
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![Siemens QAM2032.045 Duct Point Temperature Sensor, 10K Ohm Type 3, 18-Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/logo_b464a53e-c654-43e7-baad-f224abea80be_medium.png?v=1720023779)
QAM2032.045 | Duct Point Temperature Sensor, 10K Ohm Type 3, 18-Inch | Siemens
Brand: Siemens
SKU: QAM2032.045
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![Siemens QAM2021.750 Duct Point Temperature sensor, 1K Ohm Nickel at 70 Deg F, 24-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAM2021.750_medium.jpg?v=1720023777)
QAM2021.750 | Duct Point Temperature sensor, 1K Ohm Nickel at 70 Deg F, 24-Foot | Siemens
Brand: Siemens
SKU: QAM2021.750
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![Siemens QAM2030.500 Duct Point Temperature Sensor, 10K Ohm NTC Type 2, 16-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAM2030.500_medium.jpg?v=1720023780)
QAM2030.500 | Duct Point Temperature Sensor, 10K Ohm NTC Type 2, 16-Foot | Siemens
Brand: Siemens
SKU: QAM2030.500
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![Siemens QAM2030.250 Duct Point Temperature Sensor, 10K Ohm NTC Type 2, 8-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/QAM2030.250_medium.jpg?v=1720023770)
QAM2030.250 | Duct Point Temperature Sensor, 10K Ohm NTC Type 2, 8-Foot | Siemens
Brand: Siemens
SKU: QAM2030.250
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![Siemens QAM2032.020 Duct Point Temperature Sensor, 10K Ohm Type 3, 8-Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/logo_e37c842b-4c26-4ec9-afbb-45737a44718d_medium.png?v=1720023768)
QAM2032.020 | Duct Point Temperature Sensor, 10K Ohm Type 3, 8-Inch | Siemens (OBSOLETE)
Brand: Siemens
SKU: QAM2032.020
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![Siemens AQY2030 Remote Sensing Cable - 30-foot, for 2 percent Duct or Outside Air RH Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/AQY2030_medium.jpg?v=1720022884)
AQY2030 | Remote Sensing Cable - 30-foot, for 2 percent Duct or Outside Air RH Sensor | Siemens
Brand: Siemens
SKU: AQY2030
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![Siemens 544-560-4 Duct Point Sensor, Platinum, -4 to 122 Deg F, 4-Inch | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/544-560-4_medium.jpg?v=1720022571)
544-560-4 | Duct Point Sensor, Platinum, -4 to 122 Deg F, 4-Inch | Siemens
Brand: Siemens
SKU: 544-560-4
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![Siemens 540-739 10K Ohm Duct Temperature Sensor, with 18-inch probe | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/540-739_medium.jpg?v=1720022552)
540-739 | 10K Ohm Duct Temperature Sensor, with 18-inch probe | Siemens
Brand: Siemens
SKU: 540-739
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![Siemens 540-246-72 Flexible Averaging Duct Sensor, 100K Ohm, 6-Foot | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/540-246-72_medium.jpg?v=1720022552)
540-246-72 | Flexible Averaging Duct Sensor, 100K Ohm, 6-Foot | Siemens
Brand: Siemens
SKU: 540-246-72
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![Senva Sensors HD-3C Duct, 3% RH, 100 Ohm Platinum | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_333bac2f-ef37-4956-b3bb-5ee19e8d3af3_medium.png?v=1720021102)
HD-3C | Duct, 3% RH, 100 Ohm Platinum | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-3C
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![Senva Sensors HR-2F Wall, 2% RH, 10k Type3 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_CHTWL_1ae453c9-db99-4a7f-a872-2dc64ebeac66_medium.png?v=1720021096)
HR-2F | Wall, 2% RH, 10k Type3 | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HR-2F
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![Senva Sensors HR-2E Wall, 2% RH, 10k Type2 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_CHTWL_39a690f2-f03a-43fd-99fc-1ce5f90da6ae_medium.png?v=1720021091)
HR-2E | Wall, 2% RH, 10k Type2 | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HR-2E
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![Senva Sensors HD-2J Duct, 2% RH, 1.8k Thermistor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_65efafbf-cdce-4f7b-b173-ab61c9dec3b5_medium.png?v=1720021086)
HD-2J | Duct, 2% RH, 1.8k Thermistor | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-2J
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![Senva Sensors HR-2G Wall, 2% RH, 10k 11k Shunt | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_CHTWL_da13f796-7182-47b5-a1fe-ba953c4bd4fe_medium.png?v=1720021083)
HR-2G | Wall, 2% RH, 10k 11k Shunt | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HR-2G
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![Senva Sensors HD-3K Duct, 3% RH, 20k Thermistor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_e85b9fd8-976b-4656-8795-85ef29a07c83_medium.png?v=1720021071)
HD-3K | Duct, 3% RH, 20k Thermistor | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-3K
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![Senva Sensors HD-2C Duct, 2% RH, 100 Ohm Platinum | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_1f08a7b9-8b7f-4145-a024-18530cf30751_medium.png?v=1720021065)
HD-2C | Duct, 2% RH, 100 Ohm Platinum | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-2C
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![Senva Sensors HR-2B Wall, 2% RH/Temp Transmitter | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_CHTWL_ada6199f-7113-4446-b82d-72b0d5917796_medium.png?v=1720021062)
HR-2B | Wall, 2% RH / Temp Transmitter | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HR-2B
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![Senva Sensors HD-3E Duct, 3% RH, 10k Type 2 | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_ec688300-a48e-4c04-96cb-65ccf91b852c_medium.png?v=1720021059)
HD-3E | Duct, 3% RH, 10k Type 2 | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-3E
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![Senva Sensors HD-2D Duct, 2% RH, 1000 Ohm Platinum | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_360e2482-ff57-481d-a826-4ba1155aa468_medium.png?v=1720021059)
HD-2D | Duct, 2% RH, 1000 Ohm Platinum | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-2D
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![Senva Sensors HD-3D Duct, 3% RH, 1000 Ohm Platinum | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_55430e8f-202d-4eee-8dcb-5e3a389b9d1f_medium.png?v=1720021057)
HD-3D | Duct, 3% RH, 1000 Ohm Platinum | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-3D
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![Senva Sensors HD-3H Duct, 3% RH, 3k Thermistor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_1b25ef95-3ee3-4208-bdfe-4ae9e4bac9e0_medium.png?v=1720021055)
HD-3H | Duct, 3% RH, 3k Thermistor | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-3H
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![Senva Sensors HD-3B Duct, 3% RH/Temp Transmitter | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/Senva_Family_HD_edb9c810-4cea-47de-8244-1af84c992b46_medium.png?v=1720021054)
HD-3B | Duct, 3% RH / Temp Transmitter | Senva Sensors (OBSOLETE)
Brand: Senva Sensors
SKU: HD-3B
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