YALE Door Security & Furniture Digital LCD door spy hole 624507 - YALE 45-5800-1443-00-6011, The YALE 45-5800-1443-00-6011 digital LCD door spy hole features a 10.66 cm (4.2 inch) screen for clear viewing. It is designed to enhance security by allowing residents to see who is at the door without opening it. This product is ideal for home and apartment use, providing an easy and convenient way to monitor visitors. YALE 45-5800-1443-00-6011 Digital Door Viewer 4.2" LCD, 110° View, Night Vision.