2.8" LCD Monitor Digital Door Peephole Viewer Home Security Camera Cam Doorbell Electronic peephole viewer is a new type household security product. It is different from the traditional electronic peephole viewer. It is equipped with LCD screen as the indoor window for observing visitors.It is more beautiful and safety. This product can not only be replaced in the existing electronic peephole viewer, but also simply installed on the new door. It can totally replace the traditional electronic peephole viewer.