Feature
The Nest Doorbell has built-in intelligence and can tell the difference between a person, package, animal, and vehicles and send you an alert in the Google Home app, no subscription required, Easily check in from anywhere 24/7 with live HD video with HDR and night vision[1]; see what you missed with 3 hours of free event video history[2]; or add a Nest Aware subscription (sold separately) for up to 60 days of event video history, If your Wi-Fi goes down or theres a power outage, the Nest Doorbell will store up to 1 hour of recorded events so you can see what you missed, The Nest Doorbell is easy to install wired or wire-free; the built-in battery means it works with any door, or connect it to your existing doorbell wires with the included wire connector, Whether you choose battery or wired installation, the battery-powered Nest Doorbell cannot continuously record 24/7 video history, even with a Nest Aware subscription, Talk and listen to visitors at your door, even if you are away[1]; use the Google Home app to say you will be right there, ask a delivery person to leave your package, or respond to visitors with pre-recorded messages.
Others
Voice control works with Alexa or Google Assistant. Dimensions - 46 x 24.1 x 160mm, Color - Snow, Camera - 1/3 inch, 1.3-megapixel color sensor, 6x digital zoom , 3:4 aspect ratio, Field of view - 145 Degree diagonal, Video - HD, 960 x 1280 pixels, up to 30 FPS, 24/7 live view, Night vision, HDR, H.264 encoding, Video history - Captures and stores video clips of activity within the past 3 hours. Audio - High-quality speaker and microphone, Two-way audio with noise cancellation, Lights - White LED status light ring, RGB LED status light, Sensors - PIR (motion and proximity sensor), Magnetometer, Night vision - See up to 10 feet away, Four 850 nm infrared LEDs with IR cut filter, Wireless - 802.11a/b/g/n/ac (2.4 GHz and 5 GHz) Wi-Fi. WEP, WPA, WPA2, WPA3 encryption supported. Bluetooth Low Energy (BLE), Security - TLS/SSL with 128-bit AES. Power - Built-in rechargeable Li-Ion battery, 6 Ah, 3.65V. Weather resistance - IP54 weather resistant, Relative humidity range: 20% to 85%.