الوصف

Detailed Product Description Model LS****2 optical door viewer is a new-style door viewer that adopts optical imaging principle. It changes the traditional observation mode of door viewer, through which yon can clearly see the outside visitors at a distance of **3m from the door without pressing close to the door viewer Application: Model LS****2 optical door viewer is widely used for any standard doors of offices, houses, apartments, hotels and so on, and particularly suitable for places emphasizing on safety and defense. Specification: There are two specifications for your choice: 1. ***5 - *4mm is the diameter of hole in the door for door viewer; *5mm is the diameter of the viewing range of door viewer 2. ***0 - *0mm is the diameter of hole in the door for door viewer; *0mm is the diameter of the viewing range of door viewer Characteristics: 1. Optical systems adopt complete optical lens and you can get clear and stable image 2. Its metal shell is firm and solid and fire-proof 3. Special installation structure can effectively prevent the outside demolition of door viewer 4. It is easy for observation, installation and usage