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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eKyro is a smart home brand built around universal Wi-Fi garage door controllers that retrofit an existing opener instead of replacing it, alongside a small range of smart plugs. Its garage controller connects to most openers through a dry contact wiring connection, ships with a door sensor for open and left-open alerts, and supports Amazon Alexa, Google Home and Siri with no hub and no monthly fee. The company sells mainly through Amazon and its own website.
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