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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 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 540-520B Room Temperature Sensor, Flush Mount, 10 K ohm, 55-95 Deg F, White | Midwest Supply Us
540-520B | Room Temperature Sensor, Flush Mount, 10 K ohm, 55-95 Deg F, White | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-520B
$94.53 each
View Details Siemens Building Technology QAA2280.FWNC Room Temp Sensor, Full Feature, No Logo, Tool Port, Siemens TEC Controllers | Midwest Supply Us
QAA2280.FWNC | Room Temp Sensor, Full Feature, No Logo, Tool Port, Siemens TEC Controllers | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2280.FWNC
$187.48 each
View Details Siemens Building Technology 540-670B Room Temperature Sensor with Setpoint and Occupancy Override, White | Midwest Supply Us
540-670B | Room Temperature Sensor with Setpoint and Occupancy Override, White | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-670B
$478.31 each
View Details Siemens Building Technology QFA3171 Outside Air RH and Temp Sensor, 2 percent, RH: 4-20 4 to 20 Ma T: 4-20 mA | Midwest Supply Us
QFA3171 | Outside Air RH and Temp Sensor, 2 percent, RH: 4-20 4 to 20 Ma T: 4-20 mA | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3171
$306.44 each
View Details Siemens Building Technology QFA3280.FWSC Room Temp Sensor, RH 2%, TEC, Digital signal, Sense & Display | Midwest Supply Us
QFA3280.FWSC | Room Temp Sensor, RH 2%, TEC, Digital signal, Sense & Display | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3280.FWSC
$267.82 each
View Details Siemens Building Technology QAA22SS.EWSN Room Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), No HMI, Siemens Logo | Midwest Supply Us
QAA22SS.EWSN | Room Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), No HMI, Siemens Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA22SS.EWSN
$112.64 each
View Details Siemens Building Technology 540-660A Room Temperature Sensor, Beige | Midwest Supply Us
540-660A | Room Temperature Sensor, Beige | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-660A
$268.06 each
View Details Siemens Building Technology QFM2171 Duct RH and Temp Sensor, 5 percent accuracy, RH: 4-20 4 to 20 Ma T: 4-20 mA | Midwest Supply Us
QFM2171 | Duct RH and Temp Sensor, 5 percent accuracy, RH: 4-20 4 to 20 Ma T: 4-20 mA | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM2171
$201.62 each
View Details Siemens Building Technology QFA3100 Outside Air Relative Humidity Sensor, 2 percent accuracy, 0-10 Vdc | Midwest Supply Us
QFA3100 | Outside Air Relative Humidity Sensor, 2 percent accuracy, 0-10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3100
$251.50 each
View Details Siemens Building Technology QPA2284.FWNC Room CO2+Humidity+Temp Sensor, Full Feat, No Logo, Tool Port, TEC Controller | Midwest Supply Us
QPA2284.FWNC | Room CO2+Humidity+Temp Sensor, Full Feat, No Logo, Tool Port, TEC Controller | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPA2284.FWNC
$669.52 each
View Details Siemens Building Technology QPA2060D Room Sensor CO2 and Temperature with Display, 0 to 10V | Midwest Supply Us
QPA2060D | Room Sensor CO2 and Temperature with Display, 0 to 10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPA2060D
$509.19 each
View Details Siemens Building Technology QPA2062 Room Sensor CO2 + Temperature + Relative Humidity, 0 to 10V | Midwest Supply Us
QPA2062 | Room Sensor CO2 + Temperature + Relative Humidity, 0 to 10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPA2062
$619.88 each
View Details Siemens Building Technology QFR9500.KIT QFR9500 with AQM3H Harness Duct surface mount RH sensor with wiring harness | Midwest Supply Us
QFR9500.KIT | QFR9500 with AQM3H Harness Duct surface mount RH sensor with wiring harness | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFR9500.KIT
View Details
View Details Siemens Building Technology QAM2120.200 Duct Averaging Sensor, 1K Ohm Nickel, 6.5-Foot | Midwest Supply Us
QAM2120.200 | Duct Averaging Sensor, 1K Ohm Nickel, 6.5-Foot | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2120.200
$134.32 each
View Details Siemens Building Technology QFA32SS.FWNN Room Humidity + Temperature Sensor, Full Feature, No Logo | Midwest Supply Us
QFA32SS.FWNN | Room Humidity + Temperature Sensor, Full Feature, No Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA32SS.FWNN
$267.22 each
View Details Siemens Building Technology QFA2001 ROOM RH SENSOR, 4-20MA, 2 WIRE, 5% | Midwest Supply Us
QFA2001 | ROOM RH SENSOR, 4-20MA, 2 WIRE, 5% | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA2001
$197.88 each
View Details Siemens Building Technology QPM2102 Duct Sensor CO2 and VOC, 0 to 10V | Midwest Supply Us
QPM2102 | Duct Sensor CO2 and VOC, 0 to 10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPM2102
$534.19 each
View Details Siemens Building Technology QFA3101 Outside Air Relative Humidity Sensor, 2 percent, 4-20 mA | Midwest Supply Us
QFA3101 | Outside Air Relative Humidity Sensor, 2 percent, 4-20 mA | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3101
$251.50 each
View Details Siemens Building Technology QBE3100UD25 Liquid Differential Pressure Sensor, 0-25 PSI | Midwest Supply Us
QBE3100UD25 | Liquid Differential Pressure Sensor, 0-25 PSI | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QBE3100UD25
$498.96 each
View Details Siemens Building Technology QAM2012.020 Duct Point Temperature Sensor, 1K Ohm Platinum, (385 Alpha), 8-Inch | Midwest Supply Us
QAM2012.020 | Duct Point Temperature Sensor, 1K Ohm Platinum, (385 Alpha), 8-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2012.020
$42.13 each
View Details Siemens Building Technology QAM2021.750 Duct Point Temperature sensor, 1K Ohm Nickel at 70 Deg F, 24-Foot | Midwest Supply Us
QAM2021.750 | Duct Point Temperature sensor, 1K Ohm Nickel at 70 Deg F, 24-Foot | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2021.750
$140.42 each
View Details Siemens Building Technology QAE2012.005 Immersion Well Temperature Sensor, 1K Ohm Platinum (385 Alpha), 2.5" Probe | Midwest Supply Us
QAE2012.005 | Immersion Well Temperature Sensor, 1K Ohm Platinum (385 Alpha), 2.5" Probe | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAE2012.005
$68.06 each
View Details Siemens Building Technology QAC2020U Outside Air Temperature Sensor, 1K Ohm, Nickel | Midwest Supply Us
QAC2020U | Outside Air Temperature Sensor, 1K Ohm, Nickel | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAC2020U
$70.08 each
View Details Siemens Building Technology QAM2020.045 Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 18-Inch | Midwest Supply Us
QAM2020.045 | Duct Point Temperature Sensor, 1K Ohm Nickel at 32 Deg F, 18-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2020.045
$54.49 each
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