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FabLab - Smart Citizen Kit v2.1 (VOC)

General Description

The Smart Citizen Kit V2.1 (SCK 2.1) sensor provides real-time measurements of PM1.0, PM2.5 and PM10 mass concentrations, volatile organic compound (VOC) and equivalent carbon dioxide measurements. The sensor also provides temperature, relative humidity, pressure, noise level, and ambient light measurements.

Principle of Operation

The SCK 2.1 sensor uses an integrated AMS CCS811 metal oxide gas sensor. An algorithm processes the raw sensor measurements to simultaneously report both a VOC and equivalent carbon dioxide concentration.



  • Dimensions: 60 x 20 x 20 mm
  • Weight: 65 g
  • Battery: Yes (3.7V 2000mAh Lithium ion)
  • Power supply: Yes (micro-USB charging cable)
  • Sensor lifetime: N/A
  • Clock function: no
  • Sampling mechanism: Fan
  • Environmental operating conditions: N/A
  • Internal data logging: Yes (micro-SD card)
  • Data communication: Wi-Fi
  • Data logging: Cloud software and micro-SD card
  • Data visualization: Cloud software
  • Weatherproof: No (optional housing for purchase, not tested)



  • Ambient air monitoring
  • Citizen Science/local communities
  • Education
  • Research

Manufacturer's product webpage

    South Coast Air Quality Management District

    21865 Copley Dr, Diamond Bar, CA 91765



    © 2024 South Coast Air Quality Management District