This type of security camera works almost like a doorbell, except that when someone’s at the door and pushes the button, you’ll get an alert from your smartphone and have the ability to answer the door remotely. It’s a great way for when you’re expecting a guest or a friend. What’s more, it also lets you see who’s stopped by in your place when you’re away from home, and whether or not the person at the door is welcome to see you. Some door/entryway monitoring cameras even allow you to take snapshots and video clips, and be integrated into some parts of your automated home, like in smart door locks. The Ring Video Doorbell Pro works both as a doorbell and a security camera. With it, you can update and replace your existing doorbell in just a matter of minutes. Simply connect it to the doorbell wire using the included tool kit and you’ll never have to charge a battery. It’s that convenient!//images na. ssl images amazon. com/images/I/E1mPhLHevYS. mp4This door monitoring camera boasts a crystal clear 1080p wide angle HD video resolution that allows you to see everything clearly so you won’t have to miss a visitor again.