Know what’s happening at the door. The Nest Doorbell includes intelligent alerts, which can tell the difference between a person, package, animal, and vehicle.*Check in anytime. See activity at your front door around the clock. Get peace of mind knowing you can check in 24/7 without having to recharge batteries.*Talk and listen, from anywhere. Chat through the doorbell to let friends know you’ll be right there. Or tell a delivery person where to leave a package.*See more at the door, day or night. Get a sharp, vivid view of your front doorstep. HDR helps you see details in sunlight or shadows, while night vision helps you see in the dark.Easy control with the Google Home app. Set up and manage your Nest Doorbell using the Google Home app.** You can also view the live video feed at home.google.com.Use devices that work with Google Assistant or Amazon Alexa to stream your live video feed or see and talk to people at your door. And use compatible Nest and Amazon Alexa speakers and displays as a doorbell chime.Video backup in case of a Wi-Fi outage. If Wi-Fi goes out, the Nest Doorbell automatically records events for up to an hour. When it’s back online, you can see exactly what you missed.Works with compatible doorbell transformers. It requires a 16-24VAC, 10-40VA rated doorbell transformer and chime (both sold separately). You may need to replace existing hardware.*Some features, including mobile notifications, remote control, video streaming, and video recording, require working internet and Wi-Fi**Not compatible with the Nest app.