"Smart motion detection See who's at your door any time of day with the Google Nest Doorbell. Capable of 24/7 streaming, it sends an alert to your smart devices when someone presses the doorbell. It's designed to detect people, motion, vehicles and animals - intelligent alerts let know if a neighbour has popped round or when a parcel's been delivered. HD video streaming  Thanks to HD video with HDR and night vision, the Nest Doorbell delivers bright, crisp images to your smartphone. Using the Google Home app, you can see whoever is at your door from head to toe. Two-way audio You can communicate easily with anybody at your door from wherever you are. Two-way audio makes it possible to have a conversation, or you can simply choose from a list of quick responses in the app to play a pre-recorded message to the visitor. Battery powered The Nest Doorbell's battery-powered design makes it ideal for almost every home. If you want an audible chime you have the choice of pairing it with the Nest Mini, or connecting it to your existing wired doorbell. Google Assistant ""Hey Google, show me the front door camera."" The Nest Doorbell is works with Google Home devices, so you can view your camera on your smart display or Chromecast-enabled TV."