Enhanced security at your door The lens helps identify who is at the door before you open it, helping deter burglary and home invasion and giving you a clear view of visitors from inside your home. Heavy duty privacy protection A solid, durable privacy cover increases your privacy. When the cover is attached, visitors cannot see into your home from the outside, providing the highest level of privacy for your protection and safety. Compatibility and coverage Suitable for door thickness 35mm-60mm. Works with doors, wooden doors, iron doors, and bedroom doors. Easy, tool-free installation Easy to install and replace your peephole in 5 minutes without tools. As no one is at the door, you can comfortably view the entire environment from inside. How this helps you in real life - Use at the front door when returning home late to verify the visitor before opening. - Use in apartments or shared entrances to screen unknown callers while preserving privacy. - Use when you want to view the outside environment from inside without revealing your interior. Key attributes Function: enhances security through clear visual identification and protective privacy cover. Compatibility: door thickness 35-60 mm; suitable for various door types including wooden and iron doors. Size: supports standard peephole replacement with a privacy cover. Material and performance: designed as a durable privacy cover paired with a peephole lens for reliable screening.