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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USABlink, owned by Amazon, makes affordable, battery-powered smart security cameras and video doorbells. Its products are known for long battery life and simple setup, with local storage available through the Blink Sync Module plus optional cloud plans. Blink cameras integrate tightly with Alexa for live view and voice control.
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CamerasBlinkArc 2K+
10% OFF$99.99$89.98
CamerasBlinkBlink Mini 2K+
$39.99
CamerasBlinkMini 2
68% OFF$39.99$12.99
CamerasBlinkMini Pan-Tilt
$39.99
CamerasBlinkOutdoor 2K+
$99.99
CamerasBlinkOutdoor 4 Floodlight Camera
$99.99
CamerasBlinkOutdoor 4
$69.99
CamerasBlinkWired Floodlight Camera
$99.99
DoorbellsBlinkVideo Doorbell (2nd Gen)
$59.99