Fortune senior editor Stacey Higginbotham does a round-up of her faves in the category of connected doorbells here, sizing up the category this way:
These Wi-Fi-enabled gadgets replace your conventional doorbell with a device that, in most cases, links to your mechanical door chime and syncs with an application on your smartphone. When a visitor rings the doorbell, a notification appears on your phone’s screen. Tap on it to launch the application, from which you can view a video stream of the person at the door.
Among the brands she looks at include: August, SkyBell, Ring and Vivint.