Know when someone is at the door; Nest Doorbell can distinguish between people, animals, parcels and vehicles and notifies you when someone is at the door. Check what is going on at home; now you always know what is happening at your doorstep - thanks to the 24/7 live stream of your doorbell camera and notifications for important events such as visits or deliveries. Track Events; If you have missed something, just take a look at the event-based video overflow - 3 hours are saved for free, for more there is Nest Aware. Fits any door; Nest Doorbell is a battery operated and wireless doorbell that fits almost any door, whether home or apartment, rent or property. Easy installation; thanks to its battery, the installation of the doorbell is child's play; and for optional mains operation, it can be connected to the existing wiring with the connector. Talk to visitors from anywhere, you can talk to visitors in front of your door, even when you are not at home; this can be done easily via the Google Home app. Google Nest, your home, simple, helpful, stream your video easily via voice control to your Google Assistant and Amazon Alexa-enabled smart displays and smart TVs. Weight: 0.45415225972 Pounds, Manufacturer: Google