Advance optical technologies in our "F&NA" door viewer series. Users can visitors outside the door at the distance of one meter to the far & near amphibious optical system without saying close to it.
Basic Parameters: Angle: 180° Case Material: Aluminum Lens Material: PMMA (plastic) Tube Diameter: 26mm Head Diameter: 35mm Cover Diameter: 35mm Door Thickness: 70-100mm Finish: -SA (Silver Anodized Aluminum)