- Crafted from durable copper with a corrosion-resistant plating, this door viewer ensures longevity and reliability, making it a solid choice for your home security needs. - Features advanced optical glass lenses that provide a crystal-clear view, enhancing your ability to see who is at your door without compromising on quality. - Offers an impressive 220-degree wide angle, significantly broader than traditional door viewers, allowing for a more comprehensive view of your entryway. - Equipped with a 1.5mm thick lid that can be manually rotated to cover the lenses when not in use, providing added privacy and protection for the viewer. - Compatible with door thicknesses ranging from 35mm to 60mm, with a tube diameter of approximately 22mm. Designed to fit hole diameters between 22mm and 25mm, making it versatile for various door types. Practical applications include: - Ideal for residential homes, enhancing entryway visibility while maintaining privacy when needed. - Perfect for office buildings or commercial spaces, allowing staff to screen visitors easily. - Great for security-conscious individuals, providing peace of mind by helping to identify visitors before opening the door.