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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 QAM2030.010 Duct Point Temperature Sensor, 10K Ohm NTC Type 2, 4-Inch | Midwest Supply Us
QAM2030.010 | Duct Point Temperature Sensor, 10K Ohm NTC Type 2, 4-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM2030.010
$34.08 each
View Details Siemens Building Technology 544-973 Flush Mount Room Temp Sensor, 1K Ohm Plat RTD (375 Alpha), White Metal Cover | Midwest Supply Us
544-973 | Flush Mount Room Temp Sensor, 1K Ohm Plat RTD (375 Alpha), White Metal Cover | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 544-973
$31.81 each
View Details Siemens Building Technology 544-578 Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha) | Midwest Supply Us
544-578 | Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha) | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 544-578
$56.86 each
View Details Siemens Building Technology 544-577-60 Liquid Immersion Temperature Sensor, 1K Ohm Platinum, (375 Alpha), 6-Inch | Midwest Supply Us
544-577-60 | Liquid Immersion Temperature Sensor, 1K Ohm Platinum, (375 Alpha), 6-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 544-577-60
$86.38 each
View Details Siemens Building Technology 544-577-40 Liquid Immersion Temperature Sensor, 1K Ohm Platinum, (375 Alpha), 4-Inch | Midwest Supply Us
544-577-40 | Liquid Immersion Temperature Sensor, 1K Ohm Platinum, (375 Alpha), 4-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 544-577-40
$86.38 each
View Details Siemens Building Technology 536-774-25 Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 2.5-Inch | Midwest Supply Us
536-774-25 | Liquid Immersion Temperature Sensor, 100 Ohm Platinum RTD, 2.5-Inch | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 536-774-25
$111.31 each
View Details Siemens Building Technology QVM62.1 Air Velocity Sensor, 0 to 10 Vdc | Midwest Supply Us
QVM62.1 | Air Velocity Sensor, 0 to 10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QVM62.1
$205.60 each
View Details Siemens Building Technology 590-503 590 Series Differential Pressure Sensor, 1" Water Column | Midwest Supply Us
590-503 | 590 Series Differential Pressure Sensor, 1" Water Column | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 590-503
$129.99 each
View Details Siemens Building Technology QFM2101 Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Midwest Supply Us
QFM2101 | Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM2101
$169.90 each
View Details Siemens Building Technology QFM2100 Duct Relative Humidity Sensor, 5 percent accuracy, 0-10 Vdc | Midwest Supply Us
QFM2100 | Duct Relative Humidity Sensor, 5 percent accuracy, 0-10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM2100
$169.90 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
$601.35 each
View Details Siemens Building Technology 540-660B Room Temperature Sensor, White | Midwest Supply Us
540-660B | Room Temperature Sensor, White | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 540-660B
$260.03 each
View Details Siemens Building Technology 7MF15654CD005EA1 SENSOR, LIQUID/GAS, 4-20MA, 0-300 PSIG | Midwest Supply Us
7MF15654CD005EA1 | SENSOR, LIQUID/GAS, 4-20MA, 0-300 PSIG | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 7MF15654CD005EA1
$313.47 each
View Details Siemens Building Technology 7MF15654CB105EA1 SENSOR, LIQUID/GAS, 0-10V, 0-200 PSIG | Midwest Supply Us
7MF15654CB105EA1 | SENSOR, LIQUID/GAS, 0-10V, 0-200 PSIG | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 7MF15654CB105EA1
$304.52 each
View Details Siemens Building Technology QFM3160 Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Midwest Supply Us
QFM3160 | Duct RH and Temp Sensor, 2 percent (high) accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM3160
$267.64 each
View Details Siemens Building Technology QAM1035.008P50 Duct Temp Sensor, NTC 100K Ohm Type 2, 3" probe, Commissioning Only, 50-Pack | Midwest Supply Us
QAM1035.008P50 | Duct Temp Sensor, NTC 100K Ohm Type 2, 3" probe, Commissioning Only, 50-Pack | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QAM1035.008P50
$773.05 each
View Details Siemens Building Technology QFM3101 Duct Relative Humidity Sensor, 2 percent accuracy, 4-20 mA | Midwest Supply Us
QFM3101 | Duct Relative Humidity Sensor, 2 percent accuracy, 4-20 mA | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM3101
$242.55 each
View Details Siemens Building Technology QFM3100 Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0-10 Vdc | Midwest Supply Us
QFM3100 | Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0-10 Vdc | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFM3100
$242.55 each
View Details Siemens Building Technology 7MF15654BE005EA1 SENSOR, LIQUID/GAS, 4-20MA, 0-30 PSIG | Midwest Supply Us
7MF15654BE005EA1 | SENSOR, LIQUID/GAS, 4-20MA, 0-30 PSIG | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 7MF15654BE005EA1
$313.47 each
View Details Siemens Building Technology 7MF15654BB005EA1 SENSOR, LIQUID/GAS, 4-20MA, 0-15 PSIG | Midwest Supply Us
7MF15654BB005EA1 | SENSOR, LIQUID/GAS, 4-20MA, 0-15 PSIG | Siemens Building Technology
Brand: Siemens Building Technology
SKU: 7MF15654BB005EA1
$313.47 each
View Details Siemens Building Technology QPM2100 Duct Sensor CO2, 0 to 10V | Midwest Supply Us
QPM2100 | Duct Sensor CO2, 0 to 10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPM2100
$454.04 each
View Details Siemens Building Technology QPA2000 Room Sensor CO2, 0 to 10V | Midwest Supply Us
QPA2000 | Room Sensor CO2, 0 to 10V | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QPA2000
$331.32 each
View Details Siemens Building Technology QFA3212.FWSN Room Humidity + Temperature Sensor, Full Feature, Siemens Logo | Midwest Supply Us
QFA3212.FWSN | Room Humidity + Temperature Sensor, Full Feature, Siemens Logo | Siemens Building Technology
Brand: Siemens Building Technology
SKU: QFA3212.FWSN
$238.27 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
$493.94 each
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