Aranet, a brand of SAF Tehnika in Latvia, makes wireless sensors best known for the Aranet4 CO2 monitor. Its devices use long-range, low-power radio to track CO2, temperature, humidity and pressure, with long battery life and an E-ink display. Aranet is widely used in offices, schools and homes for reliable, accurate CO2 monitoring.
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Winix is a South Korean appliance manufacturer founded in 1973 and headquartered in Siheung, best known outside Korea for its air purifiers. Its range pairs a washable pre-filter, an activated carbon layer and a True HEPA filter with the brand's own PlasmaWave ionization stage, which can be switched off. The connected models add Wi-Fi with the Winix Smart app, air quality and light sensors driving Auto and Sleep modes, and support for Amazon Alexa and Google Home.
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