The Ring Video Doorbell is the world’s first battery-operated, Wi-Fi enabled, HD video doorbell. The device enables homeowners to see and speak with visitors from anywhere in the world by streaming live audio and video of a home’s front doorstep directly to the free iOS or Android app. The doorbell’s built-in motion sensors detect movement up to 30 feet, and HD video recording stores all recorded footage to the cloud which can be accessed via the Ring app. The Ring Doorbell is quick and easy to set up as it mounts and syncs in minutes and has a built in battery, however, it can also be powered through your existing doorbell wires. Over 11,000 people have reviewed the Ring Video Doorbell on Amazon (read reviews) and have given it an average of 4 out of 5 stars. Right now its list price of $199 has been reduced to $160. See it now on Amazon.