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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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Aaon Sensors AERCO Boiler and Water Heater Sensors AJ Antunes Sensors Armstrong Furnace Sensors Image for Armstrong International Armstrong International Sensors Bacharach Sensors Baltimore Parts Sensors Image for BAPI BAPI Sensors Barber Colman Sensors Bard HVAC Sensors Image for Belimo Belimo Sensors Bell Gossett Sensors Bosch Sensors Bradford White 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 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 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 Leak Detector Sensors Lennox Sensors Liebert Sensors MAMAC Systems Sensors Marvair Sensors Maxitrol Sensors Mcdonnell Miller Sensors Micronet 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 Resideo Sensors Reznor Sensors Rheem-Ruud Sensors Rinnai Sensors Scotsman Ice Machines Sensors Siemens Building Technology Sensors Siemens Combustion Sensors Spartan Valves Sensors Sporlan Controls Sensors Sterling Sensors System Sensor Sensors Thermo Pride Furnaces 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 QAA2230.FWSC Room Temp Sensor, 10K Ohm Type 2 NTC Thermistor, Full Feature, Talon | Midwest Supply Us
QAA2230.FWSC | Room Temp Sensor, 10K Ohm Type 2 NTC Thermistor, Full Feature, Talon | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2230.FWSC
$143.63 each
View Details Siemens Building Technology QAA2220.EWNN Room Temperature Sensor, Nickel 1K Ohm at 32F, No HMI, No Logo | Midwest Supply Us
QAA2220.EWNN | Room Temperature Sensor, Nickel 1K Ohm at 32F, No HMI, No Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2220.EWNN
$51.89 each
View Details Siemens Building Technology QMX3.P30-1WNB ROOM SENSOR | Midwest Supply Us
QMX3.P30-1WNB | ROOM SENSOR | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QMX3.P30-1WNB
View Details
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
$649.47 each
View Details Siemens Building Technology QAA1031.AASU Button Room Temperature Sensor, Stainless Steel, 10K Ohm NTC for TEC | Midwest Supply Us
QAA1031.AASU | Button Room Temperature Sensor, Stainless Steel, 10K Ohm NTC for TEC | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA1031.AASU
$115.63 each
View Details Siemens Building Technology QBE2104-P3OU REFRIGERANT PRESS SENSOR | Midwest Supply Us
QBE2104-P3OU | REFRIGERANT PRESS SENSOR | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QBE2104-P3OU
View Details
View Details Siemens Building Technology QFA3280.EWSC Room Temp Sensor, RH 2%, for TEC, Digital signal, Temp Sensing, Tool Port | Midwest Supply Us
QFA3280.EWSC | Room Temp Sensor, RH 2%, for TEC, Digital signal, Temp Sensing, Tool Port | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3280.EWSC
$148.46 each
View Details Siemens Building Technology QFA3280.DWSC Room Temp Sensor, RH 2%, for TEC, Digital signal, Sense & Display, Tool Port | Midwest Supply Us
QFA3280.DWSC | Room Temp Sensor, RH 2%, for TEC, Digital signal, Sense & Display, Tool Port | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3280.DWSC
$207.84 each
View Details Siemens Building Technology QAA2280.DWNC Room Temp Sensor, Display, No Logo, Tool Port, For Siemens TEC Controllers | Midwest Supply Us
QAA2280.DWNC | Room Temp Sensor, Display, No Logo, Tool Port, For Siemens TEC Controllers | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2280.DWNC
$138.73 each
View Details Siemens Building Technology 590-501 590 Series Differential Pressure Sensor, 5" Water Column | Midwest Supply Us
590-501 | 590 Series Differential Pressure Sensor, 5" Water Column | Siemens Building Technology (OBSOLETE)
Brand: Siemens Building Technology
SKU: 590-501
View Details
View Details Siemens Building Technology 536-784A Flush Mount Room Temp Sensor, 100K Ohm (NTC), Desert Beige Plastic Cover | Midwest Supply Us
536-784A | Flush Mount Room Temp Sensor, 100K Ohm (NTC), Desert Beige Plastic Cover | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-784A
$86.45 each
View Details Siemens Building Technology 544-562-40 Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 4-Inch | Midwest Supply Us
544-562-40 | Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 4-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 544-562-40
$113.90 each
View Details Siemens Building Technology 536-767-60 Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 6-Inch Probe | Midwest Supply Us
536-767-60 | Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 6-Inch Probe | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-767-60
$125.42 each
View Details Siemens Building Technology 544-560-18 Duct Point Sensor, Platinum, -4 to 122 Deg F, 18-Inch | Midwest Supply Us
544-560-18 | Duct Point Sensor, Platinum, -4 to 122 Deg F, 18-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 544-560-18
$80.67 each
View Details Siemens Building Technology QFA3212.EWSN Rm Humidity (0-10V) + Temp Sensor (Plat 1K Ohm 385 Alpha), No HMI, Siemens Logo | Midwest Supply Us
QFA3212.EWSN | Rm Humidity (0-10V) + Temp Sensor (Plat 1K Ohm 385 Alpha), No HMI, Siemens Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3212.EWSN
$201.18 each
View Details Siemens Building Technology QMX3.P74-1WSB ROOM OPERATOR w/SENSORS (USA) | Midwest Supply Us
QMX3.P74-1WSB | ROOM OPERATOR w/SENSORS (USA) | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QMX3.P74-1WSB
View Details
View Details Siemens Building Technology QPA2284.FWSC Room CO2+Humidity+Temperature Sensor, Full Feature, Siemens Logo, TECs | Midwest Supply Us
QPA2284.FWSC | Room CO2+Humidity+Temperature Sensor, Full Feature, Siemens Logo, TECs | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPA2284.FWSC
$649.47 each
View Details Siemens Building Technology QPM2162 Duct Sensor CO2 + Temperature + Relative Humidity, 0 to 10V | Midwest Supply Us
QPM2162 | Duct Sensor CO2 + Temperature + Relative Humidity, 0 to 10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPM2162
$669.00 each
View Details Siemens Building Technology QAA2280.DWSC Room Temp Sensor, Display, Siemens Logo, Tool Port, Siemens TEC Controllers | Midwest Supply Us
QAA2280.DWSC | Room Temp Sensor, Display, Siemens Logo, Tool Port, Siemens TEC Controllers | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAA2280.DWSC
$138.73 each
View Details Siemens Building Technology 536-767-40 Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 4-Inch Probe | Midwest Supply Us
536-767-40 | Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 4-Inch Probe | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-767-40
$114.05 each
View Details Siemens Building Technology 540-520A Room Temperature Sensor, Flush Mount, 10 K ohm, 55 to 95 deg F, Beige | Midwest Supply Us
540-520A | Room Temperature Sensor, Flush Mount, 10 K ohm, 55 to 95 deg F, Beige | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-520A
$91.69 each
View Details Siemens Building Technology 540-128 10K Ohm Duct Temperature Sensor | Midwest Supply Us
540-128 | 10K Ohm Duct Temperature Sensor | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-128
$45.21 each
View Details Siemens Building Technology 563-102-01 REPLACEMENT SENSOR BASE 2200/3200 | Midwest Supply Us
563-102-01 | REPLACEMENT SENSOR BASE 2200/3200 | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 563-102-01
$16.34 each
View Details Siemens Building Technology 536-811 Duct Point Temp Sensor, 4" rigid, 100,000 Ohm Ref Resistance 77 Deg F | Midwest Supply Us
536-811 | Duct Point Temp Sensor, 4" rigid, 100, 000 Ohm Ref Resistance 77 Deg F | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-811
$25.90 each
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