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Almost every heating, ventilation, air-conditioning, and refrigeration system uses sensors. Choose the world's top sensor brands to optimize system performance, and ensure occupant health, safety, comfort, and productivity.

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A.J. Antunes Sensors Aaon Sensors Accustat PSG Controls Sensors AERCO Boiler and Water Heater Sensors AJ Antunes Sensors Amana-Goodman Sensors Armstrong Furnace Sensors Image for Armstrong International Armstrong International Sensors Atlas Copco Sensors Auburn Sensors Bacharach Sensors Baltimore Parts Sensors Image for BAPI BAPI Sensors Barber Colman Sensors Bard HVAC Sensors Image for Belimo Belimo Sensors Bosch Sensors Bradford White Sensors Braeburn Systems Sensors Broan Fans Sensors BROAN-NuTone Sensors Buderus Sensors Burnham Boilers Sensors Carlin Sensors Carlyle Sensors Carrier Sensors Chicago Faucet Co Sensors ClimateMaster Sensors Copeland Sensors Daikin-McQuay Sensors Danfoss Sensors DriSteem Sensors Eclipse Sensors Emerson Climate-White Rodgers Sensors EWC Controls Sensors Fenwal Sensors Fireye Sensors GE Sensing-General Eastern Sensors Greenheck Sensors Grundfos Sensors Grundfos Circulators Sensors Haier A/C Sensors Heat Transfer Prod Sensors Heatcraft Refrigeration Sensors Honeywell Sensors Honeywell Analytics Sensors Honeywell E-MON Meters Sensors Honeywell Home Sensors Honeywell Inc Sensors Hydrolevel/Safeguard Sensors ICM Controls Sensors Indeeco Sensors Intellihot Sensors International Comfort Products Sensors J/B Industries SAE Fittings Sensors Johnson Controls Sensors Kele Product Sensors KMC Controls Sensors Kromschroder Sensors Laars Sensors Laars Heating Systems Sensors Leak Detector Sensors Lennox Sensors Liebert Sensors MAMAC Systems Sensors Marvair Sensors Maxitrol Sensors Mcdonnell Miller Sensors Mitsubishi Electric Sensors Modine Sensors Moen Sensors Image for Navien Boilers & Water Heaters Navien Boilers & Water Heaters Sensors Nortec Humidity Sensors Oil Equipment Manufacturing Sensors Packard Sensors Panasonic Sensors PRO 1 IAQ Sensors Pro1Iaq Sensors R.W. Beckett Sensors Raypak Sensors RBI Boiler Sensors Resideo Sensors Reznor Sensors Rheem-Ruud Sensors Rinnai Sensors Schneider Electric (Barber Colman) Sensors Scotsman Ice Machines Sensors Setra Sensors Siemens Building Technology Sensors Siemens Combustion Sensors Spartan Valves Sensors Sporlan Controls Sensors Sterling Sensors System Sensor Sensors Taco Sensors Thermo Pride Furnaces Sensors Titus HVAC Sensors Trane Sensors Utica-Dunkirk Sensors Veris Industries Sensors Viconics Sensors Viessmann Sensors Warrick-Gems Sensors Controls Sensors Water Heater Parts Sensors Weil Mclain Sensors York Sensors

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HVAC Humidity Sensor for Sale Duct Sensors Outside Sensors for Sale Room Humidity and Temperature Sensors CO2 Sensors for Sale Belimo Strap Sensors Pressure Sensors Belimo Bullet Sensors Accessories
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View Details Siemens Building Technology QAM2020.500 Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 16-Foot | Midwest Supply Us
QAM2020.500 | Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 16-Foot | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2020.500
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View Details Siemens Building Technology QAD2012 Strap-on Temperature Sensor, Platinum 1K Ohm (385 Alpha) | Midwest Supply Us
QAD2012 | Strap-on Temperature Sensor, Platinum 1K Ohm (385 Alpha) | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAD2012
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View Details Siemens Building Technology QAD2020U Surface Mount Temperature Sensor (Pipe), Nickel 1K Ohm (at 32 Deg F) | Midwest Supply Us
QAD2020U | Surface Mount Temperature Sensor (Pipe), Nickel 1K Ohm (at 32 Deg F) | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAD2020U
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View Details Siemens Building Technology AQY2010 Remote Sensing Cable - 10-foot, for 2 percent Duct or Outside Air RH Sensor | Midwest Supply Us
AQY2010 | Remote Sensing Cable - 10-foot, for 2 percent Duct or Outside Air RH Sensor | Siemens Building Technology
Brand: Siemens Building Technology
SKU: AQY2010
$373.13 each
View Details Siemens Building Technology 590-507 Differential Pressure Sensor in Conduit Box, 1% FS, 2" WC, 0 to 10 | Midwest Supply Us
590-507 | Differential Pressure Sensor in Conduit Box, 1% FS, 2" WC, 0 to 10 | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 590-507
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View Details Siemens Building Technology 590-500 Conduit assembly kit for Setra Differential Pressure Sensor | Midwest Supply Us
590-500 | Conduit assembly kit for Setra Differential Pressure Sensor | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 590-500
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View Details Siemens Building Technology 536-994A Flush Mount Room Temperature Sensor 10K Ohm (Type II) NTC, Beige Plastic Cover | Midwest Supply Us
536-994A | Flush Mount Room Temperature Sensor 10K Ohm (Type II) NTC, Beige Plastic Cover | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-994A
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View Details Siemens Building Technology QPM2162D Duct Sensor CO2 + Temperature + Relative Humidity with Display, 0-10V | Midwest Supply Us
QPM2162D | Duct Sensor CO2 + Temperature + Relative Humidity with Display, 0-10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPM2162D
$782.89 each
View Details Siemens Building Technology QAC2012 Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha) | Midwest Supply Us
QAC2012 | Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha) | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAC2012
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View Details Siemens Building Technology QAA2291.FWSC Room Temperature Sensor, Wireless - P2P, Full Feature, Siemens Logo | Midwest Supply Us
QAA2291.FWSC | Room Temperature Sensor, Wireless - P2P, Full Feature, Siemens Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2291.FWSC
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View Details Siemens Building Technology 540-739 10K Ohm Duct Temperature Sensor, with 18-inch probe | Midwest Supply Us
540-739 | 10K Ohm Duct Temperature Sensor, with 18-inch probe | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-739
$86.22 each
View Details Siemens Building Technology 540-680FB Room Temp Sensor, Sensing w/ Override, Setpt, Fahrenheit Display, White | Midwest Supply Us
540-680FB | Room Temp Sensor, Sensing w/ Override, Setpt, Fahrenheit Display, White | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-680FB
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View Details Siemens Building Technology 536-382 Air Velocity Sensor Pickup Probe Kit, 2-pipe, 12" (305 mm) | Midwest Supply Us
536-382 | Air Velocity Sensor Pickup Probe Kit, 2-pipe, 12" (305 mm) | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-382
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View Details Siemens Building Technology 192-507 Adapter Base, Room Temp Sensor, Thin Profile, ProdGroup 19X, Desert Beige, 5pk | Midwest Supply Us
192-507 | Adapter Base, Room Temp Sensor, Thin Profile, ProdGroup 19X, Desert Beige, 5pk | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 192-507
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View Details Siemens Building Technology QXA2101 CONDENSATION MONITOR W/REMOTE SENSOR | Midwest Supply Us
QXA2101 | CONDENSATION MONITOR W/REMOTE SENSOR | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QXA2101
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View Details Siemens Building Technology QPA2080 Room CO2 Sensor selectable resistance temperature output | Midwest Supply Us
QPA2080 | Room CO2 Sensor selectable resistance temperature output | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPA2080
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View Details Siemens Building Technology QFM4160 Duct RH and Temp Sensor, 2 percent certified, RH: 0-10 Vdc, T: 0-10 Vdc | Midwest Supply Us
QFM4160 | Duct RH and Temp Sensor, 2 percent certified, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM4160
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View Details Siemens Building Technology QFA4160D Outside Air RH and Temp Sensor, 2 percent certified, RH: 0-10 Vdc, T: 0-10 Vdc | Midwest Supply Us
QFA4160D | Outside Air RH and Temp Sensor, 2 percent certified, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA4160D
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View Details Siemens Building Technology QAM2020.020 Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 8-Inch | Midwest Supply Us
QAM2020.020 | Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 8-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2020.020
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View Details Siemens Building Technology QAE2032.010 Immersion Well Temperature Sensor, 10K Ohm Type 3, 4-inch | Midwest Supply Us
QAE2032.010 | Immersion Well Temperature Sensor, 10K Ohm Type 3, 4-inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAE2032.010
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View Details Siemens Building Technology QAA2291.FWNC Room Temperature Sensor, Wireless - P2P, Full Feature, No Logo | Midwest Supply Us
QAA2291.FWNC | Room Temperature Sensor, Wireless - P2P, Full Feature, No Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2291.FWNC
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View Details Siemens Building Technology QAA22SS.FWNN Room Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), Full Feature, No Logo | Midwest Supply Us
QAA22SS.FWNN | Room Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), Full Feature, No Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA22SS.FWNN
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View Details Siemens Building Technology QAA1011.AASU Button Room Temperature Sensor, 1K Ohm Platinum RTD (375), Stainless Steel | Midwest Supply Us
QAA1011.AASU | Button Room Temperature Sensor, 1K Ohm Platinum RTD (375), Stainless Steel | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA1011.AASU
$106.42 each
View Details Siemens Building Technology AQF3101 Replacement Filters for Duct RH and T Sensor Tips | Midwest Supply Us
AQF3101 | Replacement Filters for Duct RH and T Sensor Tips | Siemens Building Technology
Brand: Siemens Building Technology
SKU: AQF3101
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