How to choose the Perfect Door viewer

1、 Clarity

● Optical lenses: High quality optical glass lenses can provide clearer images. Generally speaking, the imaging effect of door mirrors with multi-layer optical lens combinations is better. For example, some advanced door mirrors use 3-5 layers of optical lenses, which can effectively reduce image distortion and color difference, making the scene outside the door realistic.

● Lens focal length:The appropriate focal length determines the observation range and clarity. A lens with a shorter focal length can provide a wider field of view, but it may cause some distortion of the image edges; A lens with a longer focal length produces more accurate images, but the field of view is relatively narrow. Usually, the focal length of a door mirror is between 3-6 centimeters, which can ensure a certain field of view while making the main areas outside the door (such as a person's face, the package at the door, etc.) clearly visible.

2. Range of vision

● Wide angle door mirror: If you want to see a wider area outside the door, such as on both sides of a hallway or in a scene where multiple people appear at the same time, you can choose a wide-angle door mirror. The field of view of wide-angle door mirrors can reach 180 ° or even wider. In this way, when someone approaches the door, they can detect and observe the surrounding situation in advance.

● Ordinary field of view door mirror: Its field of view angle is generally around 120 ° -160 °, which can meet the basic observation needs for most home doorways. Moreover, it may have an advantage in imaging clarity because the lens does not need to excessively stretch the image to achieve wide-angle effect.

3. Functional characteristics

● Anti pry function: From a safety perspective, choose a door mirror with anti pry design. Some door mirrors use special screws or reinforcement structures during installation to make them difficult to disassemble from the outside. Once someone tries to pry open the door mirror, it will trigger an alarm device or leave a mark, thereby improving the safety of the door.

● Dust prevention function: Some products will add a back cover to achieve dust and privacy protection

4、 Appearance and size

● Appearance design:The appearance of the door mirror should match the style of the door. If it is a classical style wooden door, choosing a door mirror with retro decoration will be more coordinated; For modern minimalist style doors, a door mirror with simple lines is a better choice. The color of the door mirror usually includes gold, silver, black, etc., and the appropriate combination should be selected according to the color of the door.

● Appropriate size: Ensure that the size of the door mirror is suitable for installation on the door. The outer diameter of a typical door mirror is between 3-6 centimeters, and the inner diameter (the part used for observation) is around 1-2 centimeters. Before purchasing, it is necessary to measure the thickness of the door, as different thicknesses of doors have requirements for the fitting length of the door mirror. Usually, door mirrors are suitable for installation on doors that are 35-55 millimeters thick, and some mirrors can be adapted to thicker or thinner doors by adding shims or other means.

● Regional differences: Due to weather conditions, the door thickness in cold regions is thicker, about 60-100 millimeters, in subtropical regions it is about 35-60 millimeters, and in tropical regions it is relatively thinner, about 25-42 millimeters.

5、 Brand and Quality

● Brand reputation: Choosing a well-known brand's door mirror can ensure the quality of the product and after-sales service. The Jifu brand has a good reputation in the field of security products and has a history of forty years. Their door mirror products are more trustworthy in terms of production technology, material quality, and performance stability.

● Quality certification: Products should comply with relevant safety and quality standards, such as UL fire certification in the United States, CE certification in Europe, etc. Door mirrors with quality certification have undergone rigorous testing in terms of optical performance, electrical safety, and other aspects, ensuring the safety of users' use.