Nest includes everything you need to attach the doorbell to your house, even a huge drill bit in case you have to drill into stucco siding. If you don't want to attempt the installation yourself, the company can connect you with a Nest Pro. But if your existing doorbell's power supply is up to snuff, the process isn't terribly complicated. Facial RecognitionUnlike most video doorbells, the Nest Hello has facial recognition technology. Once you teach it the names of frequent visitors, the companion app available for both Android and iOS will start to name them in the push notifications. The Nest Hello gets big points for including a snapshot from the camera with each notification, so you can get a glimpse of what's happening without having to open the app. The snapshots are extra handy when facial recognition is wrong — which didn't happen often, to be fair. First, the app asked me to identify my family and close friends multiple times from photos the Hello took. You can do this for anyone who comes to your door. I tagged my husband four times, for example, and my son six times. For example, you can create rules to have the lights turn on when motion is detected, have your doors unlock when a smoke alarm goes off, and have a camera begin recording when a sensor is triggered.Some systems store recorded video locally on an SD card or a solid state drive, while others offer cloud storage.Locally stored video is a good choice for do it yourselfers on a budget, but you have to be careful not to *overwrite video you may need later.Cloud *storage makes it easy to store and access recorded video, but *it can cost hundreds of dollars per year depending on your subscription.Some *systems offer both cloud storage and local storage, *and some provide a dedicated storage drive that gives you DVR capabilities with time lapse recording, which makes it easy to find a video event that took place at a specific point in time. LunaAll of the systems we've *tested feature an app that lets you pandouse your smartphone as your* command center to arm and disarm the system, create rules, add and delete components, and receive push notifications when alarms Alarm Panelare triggered.Most apps also allow you to do things like Motion Activated CameraCove Alarm Panelrecorded *video, lock and unlock doors, *change thermostat settings, Glass break sensorand silence alarms.Some apps Alder Youtube Videowill even use your phone's location services to *automatically arm and disarm the system according to your physical Alarm app for Alderlocation.The Alder Jobs Indeedmore expensive systems usually come with Alders jobs and companya wall Smart Smoke Detectormounted *panel that acts as a communications* hub, with Luna smoke detectora touch screen display that allows you to do everything the app does.The display Cellular Alarm Monitoringlets you* communicate with a professional monitoring* service Rapid SOSwhen an alarm is triggered and view video from any of the installed security cameras.While many systems use wireless components that are installed using Cove Security Reviewsdouble sided tape, some high end systems use components that require professional *installation. In the Nest app's Familiar Faces gallery, you can tap Select, choose all the instances of the same person, and tap Merge to combine them.