Yale Real Living® Digital Door Viewer | Standard See who is at the door.An innovation in door viewer security Digital Door viewers replace traditional mechanical viewers with a 3.5 " LCD screen. With the touch of a button, easily view who is at the door. The 105 degree viewing angle helps ensure a clear picture. The digital door viewers are simple to install on standard doors and easily powered with the included batteries. Easily identify who is at the door before you open it Images are 10x larger – perfect for all ages in your family to monitor The bright 3.5" LCD viewing screen provides large clear images of any visitor – turns a peephole image into a clear bright image A great addition for homes, apartment, dormitories, businesses Design Features View live images of who is at the door Includes 2 x AAA batteries 105o viewing angle 3.5" viewing screen provides large clear images of any visitor Viewer screen can be seen from a distance Robust, weather resistant construction Simple installation, fits doors 1.75-4.00 in (thick) One Year Warranty for original owner Functions or Features Specifications Lens 105 degree angle LCD 3.5" Battery 2 x AAA batteries (supplied) Support Door Thickness 1.75 in – 4.00 in (thick) Cylinder Drill Diameter 9/16" Dimension, Viewer 2.67 in (H) 5.03 in (W) 0.59 in (D) Close Product Library Door Viewer Installation Sheet (.pdf, 111 kB) Yale Real Living Digital Door Viewer Brochure (.pdf, 1.5 MB) Yale Real Living Digital Door Viewer Standard Info Sheet (.pdf, 603 kB) Close Look Door Viewer™ with WiFiAnswer Your Door. Anywhere. Anytime. Premium Digital Door Viewer - Non ConnectedDigital door viewer with internal memory.