Vaisala GMW90 CO₂, Temperature and Humidity Transmitter
The Vaisala GMW90 CO₂, Temperature, and Humidity Transmitter is an environmental monitor for carbon dioxide, temperature, and humidity. With advanced sensors and easy maintenance, it’s ideal for indoor air quality, HVAC, and process monitoring. Includes CO₂ calibration and communication options.
The Vaisala GMW90 CO₂, temperature, and humidity transmitter provides accurate and reliable indoor air quality monitoring for HVAC and building automation applications. It measures carbon dioxide, temperature, and humidity to support ventilation control, energy efficiency, and occupant comfort in commercial and industrial environments.
The GMW90 uses advanced sensor technology to deliver stable and repeatable results. It helps maintain compliance with indoor air quality standards in offices, hospitals, schools, and laboratories. The transmitter integrates easily with building management systems and supports long-term environmental monitoring.
For full technical specifications, download the GMW90 datasheet PDF. Part of the Vaisala environmental monitoring solutions, available from Hinco in Perth, Western Australia, backed by over 70 years of instrumentation expertise.


