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Personal Air Monitor (PAM)

Handheld, battery-powered, customizable sensor package for mobile monitoring including cellular option for data transmission to the Cloud.

  • PM2.5 and CO2 sensors come standard with the PAM
  • Customize your PAM with two additional sensors; options include CO and total VOCs
  • Upload data to the 2B Tech Data Portal with WiFi or cellular service


The 2B Technologies Personal Air Monitor (PAM) combines air pollution sensors in a compact, portable package

  • PM2.5 and CO2 sensors come standard
  • Additional sensor options include CO and total VOCs
  • Track air pollution from automobile exhaust, power plants, forest fires and industry
  • Evaluate HVAC and in-room filtration effectiveness by measuring PM2.5 indoors during forest fires
  • Assess air exchange efficiency (high indoor CO2 levels indicate poor ventilation)

Product Configurations

Standard (Handheld)

Suitable for mobile or stationary measurements, or use as a component of a larger system.

  • Dimensions: 6.3” L × 3.1” W × 2.2” H
    (16 cm × 8 cm × 5.7 cm)
  • Weight: 0.96 lbs (437 g)
  • Power Requirements: ~0.2 amp at 12 V, 2.4 watt

CarTopper Enclosure

Weather-resistant enclosure suitable for mounting on vehicles for mobile measurements.

  • Dimensions: 14” L × 8” W × 4.7” H
    (35 cm × 20 cm × 11.7 cm)
  • Weight: 3.4 lbs (1.5 kg)
  • Power Requirements: < 10 watt

Outdoor Enclosure

Ventilated weather-resistant enclosure with miniature air pump suitable for stationary outdoor monitoring.

  • Dimensions: 10.1” H × 8.6” W × 5.3” D
    (26 cm × 22 cm × 13 cm)
  • Weight: 3.9 lbs (1.8 kg)
  • Power Requirements: < 1 amp at 12 V, 10 watt max
  • PAM comes standard with PM2.5 and CO2 sensors
  • Customize the PAM with up to two additional sensors; options include CO and total VOCs
  • Handheld and portable battery operation
  • Micro-SD card data output, WiFi, and option for cellular data upload to the Cloud
  • Real-time smartphone data access via Bluetooth
  • Personal Air Monitor (PAM)
  • PAM charger
  • USB-C cable
  • SD card reader
  • USB flash drive preloaded with operation manual and other useful documentation
  • PAM quick start guide
  • Rugged NEMA enclosure for fixed-base monitoring
  • CarTopper, a vehicle-mounted enclosure for mobile monitoring
  • Cellular capability
  • Ellenburg, J.A., Williford, C.J., Rodriguez, S.L., Andersen, P.C., Turnipseed, A.A., Ennis, C.A., Basman, K.A., Hatz, J.M., Prince, J.C., Meyers, D.H., Kopala, D.J., Samon, M.J., Jaspers, K.J., Lanham, B.J., Carpenter, B.J. and Birks, J.W. (2019) Global Ozone (GO3) Project and AQTreks: Use of evolving technologies by students and citizen scientists to monitor air pollutants, Atmospheric Environment: X4, 100048. 2BTechLink
  • Winter and Spring Air Quality in Amager, DK with Focus on Spatial and Timely Distribution of Ultrafine Particles, M. del Pilar Contreras, Report for the Department of Environmental Engineering, Technical University of Denmark (2021), 79 pp.  2BTechLink


Spec Sheet
Overall Specifications


Weight 0.96 lbs (0.44 kg)
Power Requirements < 0.2 amp at 12V, 2.4 watt
Dimensions 6.3″ L x 3.1″ W x 2.2″ H (16 cm x 8 cm x 5.7 cm)
Spec Sheet 2
Sensor Specifications (per manufacturer)


Carbon Dioxide (CO2)


Sensor: Telaire T6713 (NDIR)

Measurement Range: 0-5000 ppm

Accuracy: 400-5000 ppm: ± 30 ppm, ± 3% of reading

Response Time: < 3 min for 90% step change

Particulate Matter (PM1, PM2.5)


Sensor: Plantower PMS7003 (Laser Scattering)

Particle Size Range: 0.3-10 μm

Mass Concentration Range: 0-999 μg/m3

Count Accuracy: 50% @ 0.3 μm, 98% @ ≥ 0.5μm
Response Time: < 10 s

Carbon Monoxide (CO)


Sensor: Alphasense CO-A4 (Electrochemical)

Measurement Range: 0-500 ppm

Precision: contact 2B Tech for information

Response Time: < 30 s for a 10-ppm step change

Total VOCs


Sensor: ION Science Mini-PID2 HS (Photoionization)

Measurement Range: 0 to 3 ppm

Minimum Detection Limit: 0.5 ppb

Response Time: < 12 s

Sensitivity: > 600 mV per ppm



Sensor: Bosch BME680

Measurement Range: 300 to 1100 hPa

Accuracy: ±1.0 hPa

Resolution: 0.18 Pa

Long-Term Stability: ±1.0 hPa per year

PAM Instrument Temperature and Relative Humidity


Sensor: Honeywell HIH8120 (Platinum RTD / Capacitive)

Measurement Range: 0-65 °C / 0 to 100 %RH

Accuracy: ± 0.5 °C from 5 °C to 50 °C / ± 2 %RH

Response Time (RH): 8 s


Data Portal

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"A very compact, lightweight, rugged and accurate instrument. A great product! A great group of people!"
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