The Nest Doorbell is a battery-powered video doorbell that can be used with any home. It has a 1.3-megapixel colour sensor and 6x digital zoom. It also has a 145° diagonal field of view. It has HD, 960 × 1280 pixels, up to 30fps and 24/7 live view. It also has night vision and HDR video. It has a high-quality speaker and microphone. It also has 2-way audio with noise cancellation. It is also weather resistant (IP54). It has smart alerts that can tell the difference between people, packages and vehicles. It can also recognise familiar people and tell you who’s there. It has a vertical field of view. A 3:4 ratio means you can see people from head to toe and packages left on the ground. It also has HDR which helps with bright, high-contrast light at all times and night vision which gives you a clear image, even in low light and darkness. It also has a built-in speaker and microphone so you can talk to visitors. You can also respond to someone at the door when they arrive or choose from a menu of pre-set responses. It also has the ability to store up to one hour of recorded events in its local memory if your Wi-Fi goes down or there’s a power outage. When things are up and running again, you’ll be able to see exactly what happened. Some features, including mobile notifications, remote control, video streaming and video recording, require working internet and Wi-Fi.