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Collection: Outside Air

Outside air temperature (OAT) sensors provide critical external weather data to help HVAC systems optimize efficiency. They enables "free cooling" by way of economizers, manage heat system output, and protect components on extreme days. We offer these from trusted brands such as Senva and Siemens.

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dual 3-wire (22 products)
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field replaceable (22 products)
gasketed (22 products)
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LCD (22 products)
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Outdoor (22 products)
Outside Air Temperature (32 products)
QAC Series (10 products)
rugged enclosure (22 products)
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field replaceable (22 products)
gasketed (22 products)
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Outside Air Temperature (32 products)
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Siemens QAC3171, Outside Air Temperature Sensor, 4-20mA, -58-122F, Plastic

Siemens QAC3171, Outside Air Temperature Sensor, 4-20mA, -58-122F, Plastic

Regular price $113.21 USD

Regular price Sale price $113.21 USD
Siemens QAC3161, Outside Air Temperature Sensor, 0-10V, -58-122F, Plastic

Siemens QAC3161, Outside Air Temperature Sensor, 0-10V, -58-122F, Plastic

Regular price $113.21 USD

Regular price Sale price $113.21 USD
Siemens QAC22, Outside Temperature Sensor, -22 to 122 degrees Fahrenheit

Siemens QAC22, Outside Temperature Sensor, -22 to 122 degrees Fahrenheit

Regular price $36.06 USD

Regular price Sale price $36.06 USD
Siemens QAC2032U, Outside Air Temperature Sensor, 10K Ohm Type 3

Siemens QAC2032U, Outside Air Temperature Sensor, 10K Ohm Type 3

Regular price $55.84 USD

Regular price Sale price $55.84 USD
Siemens QAC2030U, Outside Air Temperature Sensor, 10K Ohm, Type 2

Siemens QAC2030U, Outside Air Temperature Sensor, 10K Ohm, Type 2

Regular price $52.02 USD

Regular price Sale price $52.02 USD
Siemens QAC2030, Outside Air Temperature Sensor, 10k Ohm, Type 2

Siemens QAC2030, Outside Air Temperature Sensor, 10k Ohm, Type 2

Regular price $23.34 USD

Regular price Sale price $23.34 USD
Siemens QAC2021U, Outside Air Temperature Sensor, 1K Ohm, Nickel

Siemens QAC2021U, Outside Air Temperature Sensor, 1K Ohm, Nickel

Regular price $95.58 USD

Regular price Sale price $95.58 USD
Siemens QAC2020U, Outside Air Temperature Sensor, 1K Ohm, Nickel

Siemens QAC2020U, Outside Air Temperature Sensor, 1K Ohm, Nickel

Regular price $67.78 USD

Regular price Sale price $67.78 USD
Siemens QAC2012U, Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha)

Siemens QAC2012U, Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha)

Regular price $57.65 USD

Regular price Sale price $57.65 USD
Siemens QAC2012, Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha)

Siemens QAC2012, Outside Air Temperature Sensor, 1K Ohm Platinum (385 alpha)

Regular price $28.65 USD

Regular price Sale price $28.65 USD
Senva CT1O-K3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 20k Thermistor

Senva CT1O-K3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 20k Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-K3D Combination IAQ Sensor, CO2, Outdoor LCD, 20K Thermistor

Senva CT1O-K3D Combination IAQ Sensor, CO2, Outdoor LCD, 20K Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-J3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 1k8 Thermistor

Senva CT1O-J3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 1k8 Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-J3D Combination IAQ Sensor, CO2, Outdoor LCD, 1K8 Thermistor

Senva CT1O-J3D Combination IAQ Sensor, CO2, Outdoor LCD, 1K8 Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-I3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 2k2 Thermistor

Senva CT1O-I3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 2k2 Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-I3D Combination IAQ Sensor, CO2, Outdoor LCD, 2K2 Thermistor

Senva CT1O-I3D Combination IAQ Sensor, CO2, Outdoor LCD, 2K2 Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-H3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 3K Thermistor

Senva CT1O-H3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 3K Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-H3D Combination IAQ Sensor, CO2, Outdoor LCD, 3K Thermistor

Senva CT1O-H3D Combination IAQ Sensor, CO2, Outdoor LCD, 3K Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-G3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 10K w/11K Thermistor

Senva CT1O-G3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 10K w/11K Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-G3D Combination IAQ Sensor, CO2, Outdoor LCD, 10K w/11K Thermistor

Senva CT1O-G3D Combination IAQ Sensor, CO2, Outdoor LCD, 10K w/11K Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-F3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 10K Type 3 Thermistor

Senva CT1O-F3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 10K Type 3 Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-F3D Combination IAQ Sensor, CO2, Outdoor LCD, 10K Type 3 Thermistor

Senva CT1O-F3D Combination IAQ Sensor, CO2, Outdoor LCD, 10K Type 3 Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-E3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 10K Type 2 Thermistor

Senva CT1O-E3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 10K Type 2 Thermistor

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-E3D Combination IAQ Sensor, CO2, Outdoor LCD, 10K Type 2 Thermistor

Senva CT1O-E3D Combination IAQ Sensor, CO2, Outdoor LCD, 10K Type 2 Thermistor

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-D3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 1000Pt RTD

Senva CT1O-D3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 1000Pt RTD

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-D3D Combination IAQ Sensor, CO2, Outdoor LCD, 1000PT RTD

Senva CT1O-D3D Combination IAQ Sensor, CO2, Outdoor LCD, 1000PT RTD

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-C3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 100PT RTD

Senva CT1O-C3X Combination IAQ Sensor, CO2, Outdoor NoLCD, 100PT RTD

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-C3D Combination IAQ Sensor, CO2, Outdoor LCD, 100PT RTD

Senva CT1O-C3D Combination IAQ Sensor, CO2, Outdoor LCD, 100PT RTD

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-B3X Combination IAQ Sensor, CO2, Outdoor NoLCD, TempTransmitter

Senva CT1O-B3X Combination IAQ Sensor, CO2, Outdoor NoLCD, TempTransmitter

Regular price $333.25 USD

Regular price Sale price $333.25 USD
Senva CT1O-B3D Combination IAQ Sensor, CO2, Outdoor LCD, TempTransmitter

Senva CT1O-B3D Combination IAQ Sensor, CO2, Outdoor LCD, TempTransmitter

Regular price $357.94 USD

Regular price Sale price $357.94 USD
Senva CT1O-A3X Combination IAQ Sensor, CO2, Outdoor NoLCD, NoTemp

Senva CT1O-A3X Combination IAQ Sensor, CO2, Outdoor NoLCD, NoTemp

Regular price $314.73 USD

Regular price Sale price $314.73 USD
Senva CT1O-A3D Combination IAQ Sensor, CO2, Outdoor LCD, NoTemp

Senva CT1O-A3D Combination IAQ Sensor, CO2, Outdoor LCD, NoTemp

Regular price $339.42 USD

Regular price Sale price $339.42 USD

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