WiredMost smart doorbells replace your home's existing doorbell, so you can expect them to have similar power requirements. This means your doorbell needs 12 to 36 volts of AC electricity to run properly. If your home doesn't meet these requirements, you or an electrician may need to install a new doorbell transformer. While we found battery powered units such as RemoBell quicker to install, doorbells like the Ring Video Doorbell 2 that also connect to your existing doorbell wiring are superior in almost every way. However, batteries mean units are much larger than a traditional doorbell button. 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 contrast, doorbells that only use a hardwired connection, like the Nest Hello and Ring Video Doorbell Pro, are slimmer and usually look nicer.