Google - Nest Wi-Fi Video Doorbell - Battery Operated - Snow

Connects to compatible devices via 3G, 4G, 4G LTE or Bluetooth; Split-Spectrum, ionization and photoelectric sensors; Nest app (download required); mounting hardware included

The Nest Doorbell is the battery-powered video doorbell that works with any home. See what’s happening at your door from anywhere and get intelligent alerts about important activity, like when there’s a person, package, animal, or vehicle.* And because there are no wires, you can install it yourself. Nest Doorbell requires the Google Home app and a Google Account – it’s not compatible with the Nest app or the home.nest.com site.