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.
View AirGradientAmazon is one of the largest smart home players through its Alexa voice assistant and the Echo family of smart speakers and displays. Beyond Echo, Amazon owns Ring and Blink for security cameras and doorbells, and its Alexa platform acts as a central hub that controls thousands of third-party smart home devices. Alexa's broad compatibility and low-cost hardware make Amazon a common starting point for new smart home users.
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Amazon27
View all - Air Quality Monitors
30% OFFSmart Air Quality Monitor
4.2(5.6K)$48.99$69.99 - Displays

Echo Hub
3.9(1.9K)$179.99 - Displays

Echo Show 10 (3rd Gen)
4.5(50.7K) - Displays

Echo Show 11
4.2(9.3K)$249.99 - Displays

Echo Show 15
4.4(6.7K)$349.99 - Displays

Echo Show 21
4.4(6.7K)$499.99 - Displays

Echo Show 5 (3rd Gen)
4.2(74.1K)$99.99 - Displays

Echo Show 8 (2025)
4.2(9.3K)$199.99 - Displays

Echo Show 8 (3rd Gen)
4.5(30.2K)$149.99 - Plugs

Smart Plug
4.7(571.3K)$24.99 - Speakers

Echo (4th Gen)
4.7(152.4K) - Speakers

Echo Dot (5th Gen)
4.7(202.1K)$79.99 - Speakers

Echo Dot Max
4.3(5.9K)$119.99 - Speakers

Echo Pop
4.7(103.6K) - Speakers

Echo Spot
4.5(47.1K)$109.99 - Speakers

Echo Studio (2025)
4.0(1.5K)$219.99 - Speakers

Echo Studio with Home Camera
3.9(26)$249.99 - Speakers

Echo Studio
4.5(41.9K) - Streaming Devices

Fire TV Cube (3rd Gen)
4.4(16.2K)$199.99 - Streaming Devices

Fire TV Stick 4K (2026)
3.3(793)$59.99 - Streaming Devices

Fire TV Stick 4K Max (2nd Gen)
4.6(84.4K)$84.99 - Streaming Devices

Fire TV Stick 4K Plus
4.6(116.4K)$69.99 - Streaming Devices

Fire TV Stick 4K Select
4.2(19.5K)$49.99 - Streaming Devices

Fire TV Stick HD (2026)
4.1(8K)$39.99 - Thermostats
29% OFFSmart Thermostat
4.0(25.7K)$56.99$79.99 - Voice Assistants

Echo Dot (6th Gen)
3.8(39)$99.99 - Voice Assistants

Echo Time
3.9(37)$199.99
