The 2nd-gen wired Nest Doorbell is always on, so you can know what's happening at your front door around the clock. Get built-in intelligent alerts about people, packages and animals, and three hours of event video history. Add up to 10 days of continuous recording with Nest Aware Plus. And manage your doorbell easily using the Google Home app.-Some features, including mobile notifications, remote control, video streaming and video recording, require working Internet and Wi-Fi. -Continuous video recording requires a Nest Aware Plus subscription. -To learn more, visit g.co/nest/cam-mem.