Sometimes you just want to know exactly who is knocking at your door. However, traditional peepholes are often not very comfortable to use, especially if you are older or physically limited. This digital peephole is much easier to operate. The device provides sharp images on its 3.2-inch display, even deep into the night. Added security comes from the ability to capture what you see as a photo. Installing the peephole is a breeze. It is suitable for door thicknesses ranging from 38 to 110 millimeters.