The peephole digital is always a solution to increase the security of the home and clearly see who is ringing the doorbell to the house. The main a peephole digital is to provide a clear image of what is happening outside the door of the house. Typically, these devices present you with a screen connected to a camera that provides a view of the classic door viewer with glass. Usually the sight glasses digital more economic feature a color LCD screen that is around 3.5” and comes with a resolution of 1.3 pixels, these are sufficient to see people outside the door quite sharp. Those who are not particularly practical in diy and may already have to worry about the installation of a peephole digital, we ensure that the installation of these devices is usually very simple and intuitive. Just check if the peephole digital you want is compatible with the thickness of your door, and follow the instructions in the package. visiamo our readers that the sight glasses digital work with AAA battery or lithium batteries, these ultimate much more long-lived.