Has been used. Excellent condition. Google Nest Hello combines the convenience of a video doorbell with the intelligence and high image quality of a Google Nest Cam Provides a live view of your front door and sends you a mobile alert when someone approaches, rings the doorbell, or leaves a package Smart technology is intelligent enough to tell the difference between a person and a thing; with a Nest Aware subscription (not included), Hello can even tell you if the visitor is someone you know or a complete stranger HD video with HDR imaging and night vision mean you can enjoy bright and clear video day or night, even in challenging lighting conditions 160-degree field of view and 4:3 aspect ratio ensure you can see visitors head to toe from close range, as well as packages on the ground Built-in Wi-Fi and Bluetooth mean you can check in anytime from anywhere, and even view a 3-hour snapshot history to see what you missed HD Talk and Listen feature lets you have a loud-and-clear conversation with a doorstep visitor even if you're not at home Quick Response feature lets you respond to visitors with convenient pre-recorded messages Note: Google Nest Hello requires an existing wired doorbell and chime, as well as 16V AC to 24V AC power and a 10VA transformer; mobile alerts, video streaming, and video recording require working internet and Wi-Fi