The 2nd-gen wired Nest Doorbell is always on, so you can know what's happening 24/7. The Nest Doorbell includes intelligent alerts, which can tell the difference between a person, package, animal and vehicle. See activity at your front door around the clock and get peace of mind knowing that you can check in 24/7 without having to recharge batteries. You can also chat through the doorbell to let friends know that you'll be right there or tell a delivery person where to leave a package. Get a sharp, vivid view of your front doorstep- HDR helps you to see details in sunlight or shadows, while night vision helps you to see in the dark.
