AirGradient 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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Yale is one of the oldest lock brands in the world and today part of Assa Abloy, with its North American smart lock business run by Fortune Brands Innovations. Its residential smart range centres on the Assure Lock 2 family, sold as keypad or touchscreen deadbolts in wired and key-free versions, plus the Approach and Linus lines. Connectivity is modular: the same lock body accepts Wi-Fi, Z-Wave, Matter or Apple Home Key modules, and everything is managed through the Yale Access app.
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