Powered by 8 AA batteries, the Digital Door Viewer provides you with the ability to see who your visitors without using a peephole. It has a 5×8-inch LCD screen that mounts to the inside of your door. The image is provided by a 3/4inch camera that can be secreted in your entranceway.

The two are connected wirelessly, which means no having to route wires from the entranceway to the door and gives you options as to where you want to mount the camera. With a $399 price tag, this is a very budget friendly security system. The 8 AA batteries will provide 1000 views, thats a lot of visitors.