This electronic device eliminates the small, distorted images created by a typical peephole's fisheye lens, providing a large, full-color digital display for seeing visitors. Replacing your existing peephole, its lens provides a wide 96º field of view, and it uses a 1.3 megapixel CMOS, the same image sensor employed by digital cameras. When you turn it on, the image of the person standing outside your door is displayed on the device's 2 1/2" TFT screen, allowing adults--even children who may not be able to reach a standard peephole--to clearly see who is visiting. You can also magnify an image using its zoom function, providing a 60º field of view. Its 1/2" diameter barrel fits through any standard door with a thickness of 1 1/4" to 2 1/4". Two included AA batteries power the peephole for up to 1,500 viewings. 5 3/4" W x 3 1/2" H x 1 1/2" D. (6 1/2 oz.)