Air Quality – Vaisala

Vaisala Air Quality Transmitter AQT400 Series for Measuring Pollution Gases and Particles

New Value in Air Quality Measurements

Vaisala Air Quality Transmitter AQT400 Series revolutionizes air quality measurements. It offers totally new value for money by providing a near reference measurement performance.

Easy to Deploy in Networks

AQT400 Series has been specifically designed for air quality monitoring networks in urban areas, road networks or around industrial sites and transportation hubs.


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


  • Measures four most common urban 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

Technical Data