- [Compatibility] Fits doors with a thickness of 35 to 55 mm, including structures made of wood fiber and metal, ensuring versatile use across different door types. - [Easy Installation] Replace your existing viewer in just 5 minutes, without the need for any tools. This hassle-free setup allows you to enhance your home security quickly. - [Enhanced Security] The specially designed lens prevents visibility from the outside, offering increased protection against unwanted visitors and suspicious activities. - [Wide Visibility] Features a 220-degree wide-angle view, allowing you to see visitors and surroundings from head to toe. This ensures you stay aware of who is at your door. Practical Applications: - Ideal for residential homes, providing peace of mind when answering the door. - Perfect for offices or businesses, facilitating security while managing visitor access. - Suitable for rental properties, ensuring that tenants can reliably monitor their entrance. Upgrade your door security with this efficient door viewer, ensuring safety and convenience without compromising style or functionality.