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You can also set an automatic notification when that person arrives. The Nest Hello’s simple design utilizes your existing doorbell wiring, so you won’t have to worry about replacing batteries. The body of the unit is made of plastic and, while the exact dimensions haven’t been released, does look smaller than other products on the market. The Nest Hello has a 160 degree HD camera that has night vision capabilities and HDR imaging. When you open the app, the live view is front and center, and is crystal clear during the day and at night. One issue other products have is the limited range of the camera, but the Nest Hello allows you to see people approaching from head to toe, so there won’t be any questions about who came within view of the Hello. The doorbell is secured to your house via a metal base, so you don’t have to worry about anyone stealing your Nest Hello from your home. As you might expect, the Nest Hello connects to your Nest app along with all of your other Nest products. This can stand alone without any other Nest product, or works tremendously well with their lineup of thermostats, cameras, and home security products. The app allows you to choose what kind of notifications you receive, whether that is any time someone comes to your door or only when the doorbell is pushed. You can also access live video at any time from your smart phone.