Sensor Detail

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General Description

The Redspira sensor provides real-time measurements of PM2.5 and PM­10 mass concentrations. Data can be viewed and downloaded through Redspira’s dashboard.

Principle of Operation

The Redispira sensor uses a PMS5003 laser particle counter, where laser beams detect particles going past by their reflectivity. These sensors count suspended particles in sizes of 0.3, 0.5, 1.0 2.5, 5.0 and 10 μm. These particle counts are processed by the sensor using a complex algorithm to calculate the PM1.0, PM2.5 and PM10 mass in μg/m3. PMS5003 sensors come factory calibrated.


  • Dimensions: 3.93 (H) x 4.33 (W) x 1.37 (D) in
  • Weight: 0.26 lb
  • Power supply: Yes, USB 4.5 – 5.0 V
  • Battery: Yes, LiPo 3.7 V 3700mAh
  • Clock function: yes
  • Sampling mechanism: Fan
  • Environmental operating conditions: - 10 - 60°C, 0 - 99% RH, non-condensing
  • Internal data logging: yes
  • Data communication and logging: data is viewed and downloaded through Redspira’s dashboard
  • Weatherproof: Plastic rainproof housing


  • Ambient air quality monitoring
  • Outdoor air quality monitoring
  • Smart Cities
  • Community Science

Developer's Product Webpage

    South Coast Air Quality Management District

    21865 Copley Dr, Diamond Bar, CA 91765



    © 2024 South Coast Air Quality Management District