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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USAYoLink uses its own long-range LoRa wireless technology to connect smart home sensors and devices across large properties where Wi-Fi and Zigbee struggle. Its catalog includes leak sensors, door sensors, sirens, valve controllers and smart plugs, managed through the YoLink app and hub. YoLink is popular for whole-property monitoring thanks to its long wireless range.
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CamerasYoLinkUno
$69.99
Door & Window SensorsYoLinkLoRa Smart Outdoor Contact Sensor
$24.99
Motion SensorsYoLinkLoRa 1/4 Mile Motion Sensor
5% OFF$23.99$22.79
PlugsYoLinkMini Plug
$24.99
PlugsYoLinkSmart Outdoor Energy Plug
15% OFF$32.99$27.99
Temperature & Humidity SensorsYoLinkSmart Wireless Thermometer Hygrometer
5% OFF$16.99$16.14
Water Leak SensorsYoLinkWater Leak Sensor 4
$23.99