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 AirGradientRing, owned by Amazon, is a leading home security brand best known for its video doorbells, but its lineup also includes security cameras, alarm systems and smart lighting. Ring devices use the Ring app and the Ring Protect subscription for video history and alerts, and integrate tightly with Alexa. Ring is one of the most popular choices for video doorbells and DIY home security.
View RingEvery product, compared
Switch between each brand's full lineup, tap any product for specs, compatibility and pricing.
CamerasRingFloodlight Cam Wired Plus
$179.99
CamerasRingIndoor Cam Plus
$59.99
CamerasRingRing Indoor Cam
$49.99
CamerasRingRing Outdoor Cam Plus
$99.99
CamerasRingRing Outdoor Cam
$79.99
CamerasRingPan-Tilt Indoor Cam
$59.99
CamerasRingSpotlight Cam Plus (wired)
$149.99
CamerasRingSpotlight Cam Plus
$149.99
CamerasRingSpotlight Cam Pro
$199.99
DoorbellsRingBattery Doorbell Plus
47% OFF$149.99$79.99
DoorbellsRingBattery Doorbell Pro
25% OFF$199.99$149.99
DoorbellsRingBattery Doorbell
40% OFF$99.99$59.99
DoorbellsRingVideo Doorbell Elite (1st Gen)
DoorbellsRingVideo Doorbell Wired
20% OFF$49.99$39.99
DoorbellsRingWired Doorbell Pro (3rd Gen)
$249.99
DoorbellsRingWired Doorbell Pro
$229.99
Door & Window SensorsRingOutdoor Contact Sensor
$49.99
Door & Window SensorsRingWindow and Door Contact Sensor (2nd gen)
25% OFF$19.99$14.99
LED BulbsRingA19 Smart LED Bulb
$14.99
Motion SensorsRingAlarm Motion Detector
$29.99
SirensRingAlarm Outdoor Siren
€79.99
Water Leak SensorsRingFlood & Freeze Sensor (2nd Gen)
25% OFF$39.99$29.99
