What is a Brass Door Viewer?

A Brass Door Viewer, also known as a door mirror or cat's eye, is a security device installed on a door that provides an outdoor viewing function. It is often made of solid brass or brass alloy with a wide-angle glass lens (common viewing angles are 180°, 200°, 220° or wider) and is suitable for a wide range of door thicknesses (35-55 mm).

Product Highlights & Classification

Material & Durability

Solid brass with modern matte, polished and electroplated finishes to enhance corrosion resistance and aesthetics.

Some manufacturers emphasize solid designs with glass lenses to ensure longevity, and are widely used in hotels, apartments and residences.

Field of View

Chinese brands offer a choice of lenses ranging from *standard 180° to ultra-wide 220° and even 290°* to meet different security needs.

Extra features

In addition to traditional lenses, digital door mirror styles with integrated camera, night vision, LCD screen, Wi-Fi or motion detection are also available on the market for smart homes.

Certifications and Standards

Some manufacturers (e.g., Jifu Hardware) support UL, CE, BS EN, etc. certifications and offer fire-rated models for fire doors.

Advantages of Made-in-China

Abundant capacity: e.g. Degol Hardware can produce 500,000-1,000,000 pieces per month with short response time (2-7 days from design to sample).

ODM/OEM Flexibility: support customized production with different surface finishes and lens specifications.

International trade experience: companies are generally diamond members, through the third-party factory audit, the United States, Europe, multi-country certification and export experience.

Our Advantage

Rich history and experience: years of specialization in the development and manufacturing of door and window hardware, with complete R&D, testing and production processes.

Complete qualification: ISO quality system, CE/UL and other international certificates are complete to ensure product compliance for export.

Customized service: We provide all-round OEM/ODM solutions from material, lens, surface treatment to packaging.

Production Strength: The factory is equipped with advanced equipment, automated production lines and batch capacity support.

High-quality global reputation: customers throughout Europe, America, Southeast Asia and other markets, with good delivery and after-sales record.