Nest Doorbell lets you know who's at your door so you never miss a visitor or parcel again. Nest Doorbell can distinguish people from things and warn you accordingly. You can speak loudly and clearly to visitors via the Nest app. The camera lets you see the big picture - a person from head to toe or a parcel on the floor - all in crisp detail, day or night. With a Nest Aware subscription, the doorbell can even distinguish between known and unknown people. Nest Hello is network-powered and streams around the clock. You can hear visitors via the Nest app and speak to them loud and clear. Or you can use short answers: A list of pre-recorded responses is available in the app, which can be output via Nest Hello. With HDR video and night vision mode, Nest Doorbell delivers bright and razor-sharp images day and night. Plus, you can see the big picture and see full-size visitors and packages on the floor. You can view the live stream and snapshots of the last 3 hours at any time. So you know what you've missed. You can switch off the bell via the Nest app and continue to receive notifications on your smartphone. This means, for example, that the baby is not woken up and the dog is not startled. Nest Doorbell can notify you via your Google Home devices that someone is at the door.