Screen Length: 135 mm Screen Height: 85 mm Screen Thickness: 25 mm features: Digital door viewer No wires on fuss Easy operation, just press the button to viewer image on large LCD screen Ideal for use in the home, hotels, security offices and a variety of locations providing security at the touch of a button Can be fitted at a lower level than traditional viewers making it easily accessible for children and people with disabilities to operate and view 110 degree wide angle clear undistorted image Fits doors 43-72 mm thick Viewer barrel diameter 14 mm External viewer available in different finishes Power Source: 4 x AA Batteries (good to approx 2000 views) Batteries supplied Installation Simple to install into new installations or to replace existing traditional door viewers without the need to damage or repair the door. Price excluding VAT