Door Viewer Peephole with Heavy Duty Privacy CoverHeavy Duty Privacy Cover Provides Top Privacy and Security-With the cover in place, no one from outside can see through the viewer into your home even with the reverse peephole. No light will beam through the hole to disturb you anymore with this nice touch. You can open and close the heavy duty back cover flexibly and smoothly. It allows you to identify visitors from a locked door, offering the highest level of privacy for your protection and safety.