air quality sensors

Indoor air quality directly affects building occupant health, comfort and productivity. Blackhawk Supply provides commercial-grade air quality sensors for buildings to deliver real-time data on particulate matter, CO2, VOC levels and other critical air quality parameters. These sensors integrate seamlessly with building automation systems to enable responsive HVAC adjustments that maintain optimal indoor environments.

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CO2 Sensors

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Duct CO2 Sensors

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Particulate Matter Sensors

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Dwyer CDT-2D44 Carbon Dioxide Transmitter | duct mount | 2000 ppm CO2 range | 4 to 20 mA / 0 to (5 or 10) VDC CO2 output & temperature output. | Blackhawk Supply

CDT-2D44 | Carbon Dioxide Transmitter | duct mount | 2000 ppm CO2 range | 4 to 20 mA / 0 to (5 or 10) VDC CO2 output & temperature output. | Dwyer

Brand: Dwyer

SKU: CDT-2D44

Dwyer CDWP-10W-C5 Industrial CO2 Transmitter | 0-10 | 000 PPM range | wall mount | with 5-8mm cable gland | Blackhawk Supply

CDWP-10W-C5 | Industrial CO2 Transmitter | 0-10 | 000 PPM range | wall mount | with 5-8mm cable gland | Dwyer

Brand: Dwyer

SKU: CDWP-10W-C5

Dwyer CDT-2N4A-LCD Carbon Dioxide/Temperature | Wall Mount | universal current/voltage output | 10K Type III Thermistor Temperature Output | North American Housing | LCD Display. | Blackhawk Supply

CDT-2N4A-LCD | Carbon Dioxide / Temperature | Wall Mount | universal current / voltage output | 10K Type III Thermistor Temperature Output | North American Housing | LCD Display. | Dwyer

Brand: Dwyer

SKU: CDT-2N4A-LCD

Dwyer CDTR-2D4E4 Carbon Dioxide/RH/Temperature Transmitter | 2000 ppm CO2 range | duct mount | 4 to 20 mA/0 to (5 or 10) VDC CO2 output | RH outputs & Pt1000 Ω RTD temperature output. | Blackhawk Supply

CDTR-2D4E4 | Carbon Dioxide / RH / Temperature Transmitter | 2000 ppm CO2 range | duct mount | 4 to 20 mA / 0 to (5 or 10) VDC CO2 output | RH outputs & Pt1000 Ω RTD temperature output. | Dwyer

Brand: Dwyer

SKU: CDTR-2D4E4

Dwyer CDTR-2N4F4-LCD Carbon Dioxide/Temperature/Humidity | Wall Mount | universal current/voltage output | 20 kΩ Thermistor Temperature Output | North American Housing | LCD Display. | Blackhawk Supply

CDTR-2N4F4-LCD | Carbon Dioxide / Temperature / Humidity | Wall Mount | universal current / voltage output | 20 kΩ Thermistor Temperature Output | North American Housing | LCD Display. | Dwyer

Brand: Dwyer

SKU: CDTR-2N4F4-LCD

Dwyer CDTR-2N4D4 Carbon Dioxide/Temperature/Humidity | Wall Mount | universal current/voltage output | Pt100 Ω RTD Temperature Output | North American Housing. | Blackhawk Supply

CDTR-2N4D4 | Carbon Dioxide / Temperature / Humidity | Wall Mount | universal current / voltage output | Pt100 Ω RTD Temperature Output | North American Housing. | Dwyer

Brand: Dwyer

SKU: CDTR-2N4D4

Dwyer CDWP-02W-C5 Industrial CO2 Transmitter | 0-2000 PPM range | wall mount | with 5-8mm cable gland | Blackhawk Supply

CDWP-02W-C5 | Industrial CO2 Transmitter | 0-2000 PPM range | wall mount | with 5-8mm cable gland | Dwyer

Brand: Dwyer

SKU: CDWP-02W-C5

Dwyer CDT-2N4F-LCD Carbon Dioxide/Temperature | Wall Mount | universal current/voltage output | 20K Thermistor Temperature Output | North American Housing | LCD Display. | Blackhawk Supply

CDT-2N4F-LCD | Carbon Dioxide / Temperature | Wall Mount | universal current / voltage output | 20K Thermistor Temperature Output | North American Housing | LCD Display. | Dwyer

Brand: Dwyer

SKU: CDT-2N4F-LCD

Dwyer CDTR-2D404 Series CDTR Carbon Dioxide/RH/Temperature Transmitter CO2/RH, duct mount, 2000 ppm | Blackhawk Supply

CDTR-2D404 | Series CDTR Carbon Dioxide / RH / Temperature Transmitter CO2 / RH, duct mount, 2000 ppm | Dwyer

Brand: Dwyer

SKU: CDTR-2D404

Dwyer CDTV-2N404 Wall Voc & CO2 transmitter | universal analog outputs | 2000 ppm CO2 | Blackhawk Supply

CDTV-2N404 | Wall Voc & CO2 transmitter | universal analog outputs | 2000 ppm CO2 | Dwyer

Brand: Dwyer

SKU: CDTV-2N404

Dwyer CDWP-05W-C5 Industrial CO2 Transmitter | 0-5000 PPM range | wall mount | with 5-8mm cable gland | Blackhawk Supply

CDWP-05W-C5 | Industrial CO2 Transmitter | 0-5000 PPM range | wall mount | with 5-8mm cable gland | Dwyer

Brand: Dwyer

SKU: CDWP-05W-C5

Dwyer CDTC-5N000-LCD Communicating carbon dioxide transmitter with temperature output | 5000 PPM range | North American housing and LCD display | Blackhawk Supply

CDTC-5N000-LCD | Communicating carbon dioxide transmitter with temperature output | 5000 PPM range | North American housing and LCD display | Dwyer

Brand: Dwyer

SKU: CDTC-5N000-LCD

Dwyer CDT-2D4D Carbon Dioxide Transmitter | duct mount | 2000 ppm | CO2 transmitter with current/voltage CO2 outputs and PT100 Ohm RTD temperature output. | Blackhawk Supply

CDT-2D4D | Carbon Dioxide Transmitter | duct mount | 2000 ppm | CO2 transmitter with current / voltage CO2 outputs and PT100 Ohm RTD temperature output. | Dwyer

Brand: Dwyer

SKU: CDT-2D4D

Dwyer CDTR-2N4F4 Carbon Dioxide/Temperature/Humidity | Wall Mount | universal current/voltage output | 20 kΩ Thermistor Temperature Output | North American Housing. | Blackhawk Supply

CDTR-2N4F4 | Carbon Dioxide / Temperature / Humidity | Wall Mount | universal current / voltage output | 20 kΩ Thermistor Temperature Output | North American Housing. | Dwyer

Brand: Dwyer

SKU: CDTR-2N4F4

Dwyer CMT-DN-D Duct mount carbon monoxide transmitter | 4-20 mA and 2-10 VDC outputs | with display. | Blackhawk Supply

CMT-DN-D | Duct mount carbon monoxide transmitter | 4-20 mA and 2-10 VDC outputs | with display. | Dwyer

Brand: Dwyer

SKU: CMT-DN-D

Dwyer CDTR-2D4D4 Carbon Dioxide/RH/Temperature Transmitter | 2000 ppm CO2 range | duct mount | 4 to 20 mA/0 to (5 or 10) VDC CO2 output | RH outputs & Pt100 Ω RTD temperature output. | Blackhawk Supply

CDTR-2D4D4 | Carbon Dioxide / RH / Temperature Transmitter | 2000 ppm CO2 range | duct mount | 4 to 20 mA / 0 to (5 or 10) VDC CO2 output | RH outputs & Pt100 Ω RTD temperature output. | Dwyer

Brand: Dwyer

SKU: CDTR-2D4D4

Dwyer CDT-2D4B Carbon Dioxide Transmitter | duct mount | 2000 ppm | CO2 transmitter with current/voltage CO2 outputs and 10K Ohm Type II thermistor temperature output. | Blackhawk Supply

CDT-2D4B | Carbon Dioxide Transmitter | duct mount | 2000 ppm | CO2 transmitter with current / voltage CO2 outputs and 10K Ohm Type II thermistor temperature output. | Dwyer

Brand: Dwyer

SKU: CDT-2D4B

Dwyer CDT-2N4E-LCD Carbon Dioxide/Temperature | Wall Mount | universal current/voltage output | Pt1000 RTD Temperature Output | North American Housing | LCD Display. | Blackhawk Supply

CDT-2N4E-LCD | Carbon Dioxide / Temperature | Wall Mount | universal current / voltage output | Pt1000 RTD Temperature Output | North American Housing | LCD Display. | Dwyer

Brand: Dwyer

SKU: CDT-2N4E-LCD

Dwyer CMT200-R Carbon Monoxide Transmitter | 0 to 200 PPM CO | 4 to 20 mA/2 to 10 VDC outputs | rectangular enclosure | Blackhawk Supply

CMT200-R | Carbon Monoxide Transmitter | 0 to 200 PPM CO | 4 to 20 mA / 2 to 10 VDC outputs | rectangular enclosure | Dwyer

Brand: Dwyer

SKU: CMT200-R

Dwyer CDTC-2N000 Communicating carbon dioxide transmitter with temperature output | 2000 PPM range and North American housing | Blackhawk Supply

CDTC-2N000 | Communicating carbon dioxide transmitter with temperature output | 2000 PPM range and North American housing | Dwyer

Brand: Dwyer

SKU: CDTC-2N000

Dwyer CDWP-10W-C1 Industrial CO2 Transmitter | 0-10 | 000 PPM range | wall mount | with 1-6 mmcable gland | Blackhawk Supply

CDWP-10W-C1 | Industrial CO2 Transmitter | 0-10 | 000 PPM range | wall mount | with 1-6 mmcable gland | Dwyer

Brand: Dwyer

SKU: CDWP-10W-C1

Dwyer CDTV-2N4A4-LCD Wall Voc & CO2 transmitter | universal analog outputs | 2000 ppm CO2 | 10K Ohm Type III temperature sensor with LCD display | Blackhawk Supply

CDTV-2N4A4-LCD | Wall Voc & CO2 transmitter | universal analog outputs | 2000 ppm CO2 | 10K Ohm Type III temperature sensor with LCD display | Dwyer

Brand: Dwyer

SKU: CDTV-2N4A4-LCD

Dwyer CDTV-2D404 Series CDTV Carbon Dioxide/Volatile Organic Compound Transmitter VOC & CO2, duct mount, 2000ppm CO2, no temp. sensor | Blackhawk Supply

CDTV-2D404 | Series CDTV Carbon Dioxide / Volatile Organic Compound Transmitter VOC & CO2, duct mount, 2000ppm CO2, no temp. sensor | Dwyer

Brand: Dwyer

SKU: CDTV-2D404

Dwyer CDTC-2N000-LCD Communicating carbon dioxide transmitter with temperature output | 2000 PPM range | North American housing and LCD display | Blackhawk Supply

CDTC-2N000-LCD | Communicating carbon dioxide transmitter with temperature output | 2000 PPM range | North American housing and LCD display | Dwyer

Brand: Dwyer

SKU: CDTC-2N000-LCD

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