Know when someone is at your door. The Nest Doorbell can distinguish between people, animals, packages, and vehicles, and it notifies you when someone is at your door. Check in anytime to see what's happening at home. Now you always know what's going on at your doorstep, thanks to the 24/7 livestream from your doorbell camera and notifications for important events, like visitors or deliveries. Track events. If you missed something, just take a look at the event-based video history. Three hours are stored for free, and for more, there's Nest Aware. Fits any door. The Nest Doorbell is a battery-operated and wireless doorbell that fits almost any door, whether it's a house or an apartment, rental or ownership. Easy installation. Thanks to its battery, installing the doorbell is a breeze. And for optional wired operation, it can be connected to existing wiring with the connector.