One, should anti-theft doors have peepholes
Decide based on actual conditions.
"Most security doors are equipped with peepholes. The initial purpose of these peepholes was to allow users to see who is outside the room before opening the door. This allows users to verify the identity of the person at the door and decide whether to open it, thereby enhancing security."
However, installing cat eyes also carries risks. Simple cat eyes can be completely removed from the outside, and the perpetrator can then open a door from the cat eye. Therefore, if you are installing cat eyes, you must install cat eyes with anti-pry features.
If your home already has a video doorbell and a smart security lock installed on the door, you may not need to install a peephole. The video doorbell and smart security lock can provide a view of the outside through their cameras.
Two. Installation of peephole in anti-theft door

1、Inspect the appearance and quality of the cat's eye.
2、Clean the peepholes on the security door to ensure smooth installation.
3、Loosen the cat's eye screw, separating the cat's eye and the pipe opening, and begin the installation.
4. First, push the protruding cat's eye inward into the hole until it is flush with the inner surface of the door.
5. Then, push the cat eye with the covering plate from the back of the door (the indoor side) into the cat eye on the outside of the door.
6、Secure the external and internal cat eyes with one hand, then tighten the two tubes together until they are securely fastened.
7. Finally, inspect the installation from all angles, both inside and outside the door, to ensure the quality of the installation. Even if the installation is complete.
III. Installation Precautions for Security Door Peepholes
1、The flat lens is installed inside the door, while the convex lens is installed outside the door.
2、When installing security door peepholes, it is crucial to tighten them securely. To ensure proper tightening, it is essential to fix both the outer and inner peepholes.