The Nest Doorbell is the battery-powered video doorbell that works with any home. See what's happening at your door from anywhere, and get alerts about important activity, like a visitor or package delivery, and because there are no wires needed, you can install it yourself. Know if a person is at your door. The Nest Doorbell can tell the difference between people, animals, packages and vehicles, and alert you when someone's there. Check in at any time. Know what's happening at your door 24/7. Check your doorbell camera from anywhere, and get alerts about important activity, like a visitor or delivery. Go back in time. See what you missed with 3 hours of free event video history. Designed for any door. The Nest Doorbell is wireless and battery-powered, which means that it works with any door, whether you live in a house or an apartment. Install it yourself. Because it's a wireless doorbell, installation is painless. If you prefer wired installation, you can connect it to your existing doorbell wires with the included wire connector. Talk and listen to visitors at your door, even if you're away.(1) Just use the Google Home app to say that you'll be right there or to ask a delivery person to leave your package. Charging temperature range (ambient air temperature): 0°C to 40°C (32°F to 104°F).The battery will not charge when the ambient air temperature is outside of this range Operating temperature range (ambient air temperature): -20°C to 40°C (-4°F to 104°F).The product is likely to shut down when the ambient air temperature is outside of this range.

Wifi, Battery Powered