The Ring Video Doorbell (Gen 2) is perfect for homeowners who want to enhance their home security. With its 1080p HD video, night vision, and motion detection, you'll always know who's at your door. Setup is a breeze using the Ring smartphone app. It has a viewing area of 155 deg horizontal and 90 deg vertical, dimensions of 4.98 x 2.44 x 1.10 in, operates in -5°F to 120°F, is water resistant, and runs on a built-in rechargeable battery that can also be integrated with an existing doorbell system. It connects via WiFi 802.11 b/g/n 2.4 GHz. Use it to see who's at the door from your phone, whether you're at home or away.