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4 Egypt Smart Smoke Detectors Sales and Growth Rate 2014 2019 9.mobile security system
2. 49ViewShow More DealsWe check over 130 million products every day for the best pricesWith video doorbells, video and audio quality matter, but the real trick is getting the notifications just right. That way, you're not bombarded by alerts, but you don't miss anything important, either. The Nest Hello $199 succeeds by continuously recording video, so you never have the frustrating experience of firing up the app just to see video of someone walking away. Facial recognition lets you know who's at the door by name, and it can also distinguish between people and cars. What's more, you can separate the field of vision into multiple zones, which helps you customize the notifications.