Ring's entry-level connected buzzer, the Video Doorbell is somewhat similar to the Video Doorbell 2. It costs $179, £140 or AU$235.

But instead of 1080p HD, you get 720p HD -- and you have to remove the doorbell's faceplate to charge it. With version 2.0, you simply have to remove the battery pack when it's time to charge.

This model will continue to sell, though, and you do have the option to hardwire it if you'd rather not deal with removing the entire doorbell to charge the battery.