ThailandAirGradient builds open-source indoor and outdoor air quality monitors that track PM2.5, CO2, temperature, humidity and other pollutants. The company is known for its open hardware and firmware, letting users build, repair and integrate the monitors with platforms like Home Assistant and its own dashboard. AirGradient appeals to people who want transparent, data-driven air quality monitoring rather than a closed black box.
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FranceNetatmo, part of the Legrand group, is a French smart home brand known for its weather stations, smart thermostats, indoor and outdoor cameras and door/window sensors. Its products emphasize design and privacy with local video storage, and support Apple HomeKit, Alexa and Google Home. Netatmo is popular in Europe for connected weather and climate monitoring.
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