Sensors Ma or vdc output Element type
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
Armstrong International Sensors Bacharach Sensors Baltimore Parts Sensors
BAPI Sensors
Belimo Sensors Bosch Sensors Bradford White Sensors Broan Fans Sensors Buderus Sensors Burnham Boilers Sensors Carlin Sensors Chicago Faucet Co Sensors Copeland Sensors Grundfos Circulators Sensors Haier A/C Sensors Heat Transfer Prod Sensors Honeywell Home Sensors Honeywell Inc Sensors Hydrolevel/Safeguard Sensors ICM Controls Sensors Intellihot Sensors J/B Industries SAE Fittings Sensors Laars Sensors Leak Detector Sensors Lochinvar Sensors Maxitrol Sensors Mcdonnell Miller Sensors Modine Sensors Moen Sensors
Navien Boilers & Water Heaters Sensors Oil Equipment Manufacturing Sensors Panasonic Sensors Pro1Iaq Sensors R.W. Beckett Sensors Raypak Sensors Reznor Sensors Rinnai Sensors Sterling Sensors Thermo Pride Furnaces Sensors Water Heater Parts Sensors Weil Mclain Sensors York Sensors
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![Siemens QFA3171D Outside Air RH & T Sensor, 2 percent, RH: 4-20 mA T: 4-20 mA, Display | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFA3171D_medium.jpg?v=1719940541)
QFA3171D | Outside Air RH & T Sensor, 2 percent, RH: 4-20 mA T: 4-20 mA, Display | Siemens
Brand: Siemens
SKU: QFA3171D
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![Siemens QFM3100 Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0-10 Vdc | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFM3100_medium.jpg?v=1719940536)
QFM3100 | Duct Relative Humidity Temperature Sensor, 2 percent accuracy, 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM3100
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![Siemens QAA22SS.EWSN Room Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), No HMI, Siemens Logo | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QAA22SS.EWSN_medium.jpg?v=1719940527)
QAA22SS.EWSN | Room Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), No HMI, Siemens Logo | Siemens
Brand: Siemens
SKU: QAA22SS.EWSN
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![Siemens QFA3100 Outside Air Relative Humidity Sensor, 2 percent accuracy, 0-10 Vdc | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFA3100_medium.jpg?v=1719940533)
QFA3100 | Outside Air Relative Humidity Sensor, 2 percent accuracy, 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFA3100
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![Siemens QFM2101 Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFM2101_medium.jpg?v=1719940538)
QFM2101 | Duct Relative Humidity Temperature Sensor, 5 percent accuracy, 4-20 mA | Siemens
Brand: Siemens
SKU: QFM2101
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![Siemens QFA3212.EWSN Rm Humidity (0-10V) + Temp Sensor (Plat 1K Ohm 385 Alpha), No HMI, Siemens Logo | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFA3212.EWSN_9ee28a79-2b24-4f90-b149-7b57f5d59040_medium.jpg?v=1719940534)
QFA3212.EWSN | Rm Humidity (0-10V) + Temp Sensor (Plat 1K Ohm 385 Alpha), No HMI, Siemens Logo | Siemens
Brand: Siemens
SKU: QFA3212.EWSN
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![Siemens QFA32SS.EWNN Room Humidity+Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), No HMI, No Logo | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFA32SS.EWNN_020b714d-0430-4b48-9aaa-2a1294a8e129_medium.jpg?v=1719940533)
QFA32SS.EWNN | Room Humidity+Temp Sensor, 0-10V / 0-5V / 4-20 mA (selectable), No HMI, No Logo | Siemens
Brand: Siemens
SKU: QFA32SS.EWNN
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![Siemens QFM3101 Duct Relative Humidity Sensor, 2 percent accuracy, 4-20 mA | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFM3101_medium.jpg?v=1719940539)
QFM3101 | Duct Relative Humidity Sensor, 2 percent accuracy, 4-20 mA | Siemens
Brand: Siemens
SKU: QFM3101
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![Siemens QFM2160U Duct RH and Temp Sensor, 5 percent accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Midwest Supply Us](http://midwestsupplyus.com/cdn/shop/files/QFM2160U_medium.jpg?v=1719940536)
QFM2160U | Duct RH and Temp Sensor, 5 percent accuracy, RH: 0-10 Vdc, T: 0-10 Vdc | Siemens
Brand: Siemens
SKU: QFM2160U
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