... , FCC, RoH Digital Door Peephole Viewer,2.8 inch LCD, Door Camera Viewer, 2xAAA batteries support 3500 peepes, Home security, One year warranty. Advantages ... Fit Door Thickness 35-60mmThe Package Includes:Camera with Cable2.8 inch LCD Indoor ViewerMount PanelM4x55 Cross Recessed Pan Head ... 3: Fix the mounting panel with screws on the inside of door. Step4: Install LCD viewer and connect the cable, ...