Air Quality Transmitter AQT400 Series

The Air Quality Transmitter AQT400 Series revolutionizes air quality measurements. It offers totally new value for money by providing a near reference measurement performance. AQT410 measures the most common gaseous pollutants nitrogen dioxide (NO2), sulphur dioxide (SO2), carbon monoxide (CO) and ozone (O3) with default configuration. AQT420 measures all this plus Particulate Matter (PM2.5 and PM10) in the ambient air. The AQT400 Series measurement performance is based on proprietary advanced algorithms that enable ppb measurements at an affordable price using electrochemical sensors. The algorithms compensate the impact of ambient conditions and aging on the sensor elements and remove the need for costly gas sampling and conditioning equipment.


  • Measures up to four most common air pollutants NO2, SO2, CO and O3.
  • Intelligent algorithms that compensate for aging and environmental conditions
  • Compact design, easy to deploy in the field
  • Low power consumption (typically 0.5W)
  • Wireless Internet connection with Multi-Observation Gateway
  • RS232 and RS485 interfaces for local connectivity (eg. Modbus support)
  • Easy integration and open API



  • Urban air quality networks
  • Industrial emission monitoring
  • Safety monitoring
  • Roadside and tunnel monitoring
  • Mobile measurement
  • Building automation and Air quality research

Sampling time: 60 s

Measuring range:

PM 2,5: 0 ... 2 000 μg/m3

PM 10: 0 ... 5 000 μg/m3

Temperature accuracy for sensorelement at +20 °C: ±0,3 °C

Operating temperature: –30 ... +40 °C

Limited performance: –40 ... +50 °C

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