Outside humidity sensors Thermistor & 4-20 ma Temp & humidity signals
We offer 700+ products from top manufacturers such as ACI, Veris, and Siemens: temperature/humidity transmitters and outdoor or duct-mounted models.
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![Belimo 22DTH-56M Duct Temp+Hum Sensor BAC | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-55M...56M_01_4C-product_retina_medium.jpg?v=1714682128)
22DTH-56M | Duct Temp+Hum Sensor BAC | Belimo
Brand: Belimo
SKU: 22DTH-56M
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![Mamac HU-227-2-MA-12 Temp & RH 2% | Temp: 10K Type II | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-2-MA-12_medium.png?v=1713900871)
HU-227-2-MA-12 | Temp & RH 2% | Temp: 10K Type II | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-2-MA-12
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![Mamac HU-226-3-MA-7 Temp & RH 3% | Temp: 10K Type III | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-7_medium.png?v=1713900840)
HU-226-3-MA-7 | Temp & RH 3% | Temp: 10K Type III | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-7
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![Belimo 22DTH-55M Duct Temp+Hum Sensor MOD | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-55M...56M_01_4C-product_retina_9e4a19b4-0763-4263-82d4-9ed8f807cd13_medium.jpg?v=1714682084)
22DTH-55M | Duct Temp+Hum Sensor MOD | Belimo
Brand: Belimo
SKU: 22DTH-55M
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![Belimo 22DTH-53M Duct Temp+Hum Sensor A | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-5.._01_4C-product_retina_0b952384-2771-4a1e-8a2d-44c8b1eeec42_medium.jpg?v=1714682117)
22DTH-53M | Duct Temp+Hum Sensor A | Belimo
Brand: Belimo
SKU: 22DTH-53M
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![Mamac HU-227-3-MA-12 Temp & RH 3% | Temp: 10K Type II | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-12_medium.png?v=1713900864)
HU-227-3-MA-12 | Temp & RH 3% | Temp: 10K Type II | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-12
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![Mamac HU-226-3-MA-12 Temp & RH 3% | Temp: 10K Type II | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-12_medium.png?v=1713900885)
HU-226-3-MA-12 | Temp & RH 3% | Temp: 10K Type II | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-12
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![Mamac HU-226-3-MA-10 Temp & RH 3% | Temp: 3K | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-10_medium.png?v=1713900814)
HU-226-3-MA-10 | Temp & RH 3% | Temp: 3K | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-10
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![Mamac HU-227-3-MA-10 Temp & RH 3% | Temp: 3K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-10_medium.png?v=1713900911)
HU-227-3-MA-10 | Temp & RH 3% | Temp: 3K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-10
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![Belimo 22DTH-53MQ Duct Temp+Hum Sensor NTC20k A | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-5.._01_4C-product_retina_44d8e9f7-0673-486c-826a-570fce7b4824_medium.jpg?v=1714682110)
22DTH-53MQ | Duct Temp+Hum Sensor NTC20k A | Belimo
Brand: Belimo
SKU: 22DTH-53MQ
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![Belimo 22DTH-53MM Duct Temp+Hum Sensor NTC10kP A | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-5.._01_4C-product_retina_6deb8c4e-266e-4e25-890f-319d69451e03_medium.jpg?v=1714682141)
22DTH-53MM | Duct Temp+Hum Sensor NTC10kP A | Belimo
Brand: Belimo
SKU: 22DTH-53MM
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![Belimo 22DTH-53ML Duct Temp+Hum Sensor NTC10k A | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-5.._01_4C-product_retina_2ca62da5-9fe4-45de-83ad-58b2fe02bfab_medium.jpg?v=1714682069)
22DTH-53ML | Duct Temp+Hum Sensor NTC10k A | Belimo
Brand: Belimo
SKU: 22DTH-53ML
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![Belimo 22DTH-53ME Duct Temp+Hum Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-5.._01_4C-product_retina_92b59d6f-ade6-4778-98a9-ef0d59cc9b56_medium.jpg?v=1714682123)
22DTH-53ME | Duct Temp+Hum Sensor | Belimo
Brand: Belimo
SKU: 22DTH-53ME
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![Belimo 22DTH-53MB Duct Temp+Hum Sensor PT1000 A | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/PIC_AM_22DTH-5.._01_4C-product_retina_afce9aa4-6575-48bd-942a-5644cf20e6fd_medium.jpg?v=1714682061)
22DTH-53MB | Duct Temp+Hum Sensor PT1000 A | Belimo
Brand: Belimo
SKU: 22DTH-53MB
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![Mamac HU-226-3-MA-21 Temp & RH 3% | Temp: 1.8K | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-21_medium.png?v=1713900840)
HU-226-3-MA-21 | Temp & RH 3% | Temp: 1.8K | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-21
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![Mamac HU-226-3-MA-18 Temp & RH 3% | Temp: 2.252K | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-18_medium.png?v=1713900892)
HU-226-3-MA-18 | Temp & RH 3% | Temp: 2.252K | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-18
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![Mamac HU-226-3-MA-17 Temp & RH 3% | Temp: 20K | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-17_medium.png?v=1713900803)
HU-226-3-MA-17 | Temp & RH 3% | Temp: 20K | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-17
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![Mamac HU-226-3-MA-15 Temp & RH 3% | Temp: 100K | RH: 4-20mA | Duct Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-226-3-MA-15_medium.png?v=1713900864)
HU-226-3-MA-15 | Temp & RH 3% | Temp: 100K | RH: 4-20mA | Duct Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-226-3-MA-15
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![Mamac HU-227-3-MA-7 Temp & RH 3% | Temp: 10K Type III | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-7_medium.png?v=1713900869)
HU-227-3-MA-7 | Temp & RH 3% | Temp: 10K Type III | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-7
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![Mamac HU-227-3-MA-21 Temp & RH 3% | Temp: 1.8K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-21_medium.png?v=1713900892)
HU-227-3-MA-21 | Temp & RH 3% | Temp: 1.8K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-21
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![Mamac HU-227-3-MA-18 Temp & RH 3% | Temp: 2.252K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-18_medium.png?v=1713900814)
HU-227-3-MA-18 | Temp & RH 3% | Temp: 2.252K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-18
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![Mamac HU-227-3-MA-17 Temp & RH 3% | Temp: 20K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-17_medium.png?v=1713900840)
HU-227-3-MA-17 | Temp & RH 3% | Temp: 20K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-17
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![Mamac HU-227-3-MA-15 Temp & RH 3% | Temp: 100K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-3-MA-15_medium.png?v=1713900863)
HU-227-3-MA-15 | Temp & RH 3% | Temp: 100K | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-3-MA-15
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![Mamac HU-227-2-MA-7 Temp & RH 2% | Temp: 10K Type III | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Blackhawk Supply](http://blackhawksupply.com/cdn/shop/files/HU-227-2-MA-7_medium.png?v=1713900885)
HU-227-2-MA-7 | Temp & RH 2% | Temp: 10K Type III | RH: 4-20mA | Outdoor Outside Air Temp & Humidity Sensor | Mamac
Brand: Mamac
SKU: HU-227-2-MA-7
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