Know who’s knocking with the wired Nest Doorbell. With person alerts, this video doorbell can tell the difference between a person and a thing, then alert you. It has 24/7 streaming, so you can check in anytime.[1] Add a Nest Aware Plus subscription for 24/7 continuous video recording and more intelligent alerts. [1] Some features, including mobile notifications, video streaming and video recording, require working internet and Wi-Fi. [2] Video recording requires a Nest Aware subscription (sold separately). [3] Intelligent alerts require a Nest Aware subscription. Familiar face alerts not available on cameras used in Illinois. [4] Personal Safety app features are dependent upon network connectivity and other factors and may not be reliable for emergency communications or available in all areas. For more information, see g.co/pixel/personalsafety. Car crash detection is not available in all languages or countries and may not detect all accidents. High-impact activities may trigger calls to emergency services. For country and language availability and more information see g.co/pixel/carcrashdetection. [5] Includes all the Nest cameras, speakers, and displays in the same home. [6] Power source accessories sold separately.