The Nest Doorbell is equipped with built-in intelligence, capable of distinguishing between a person, package, animal, and vehicles. It sends alerts in the Google Home app without requiring a subscription. You can check in live with HD video, including HDR and night vision, and review up to 3 hours of event history for free. For extended history, a Nest Aware subscription offers up to 60 days. The doorbell also stores up to 1 hour of recorded events in case of Wi-Fi loss or a power outage. Installation is easy, either wired or wire-free, and it works with any door. However, for continuous 24/7 video history, even with a subscription, it must be wired. You can communicate with visitors through the Google Home app, and it's compatible with Google Nest and Amazon smart displays for hands-free video streaming.