Insert the viewer into the hole then screw the two sides together and tighten by hand. The viewing tube is somewhat larger than many other standard peephole viewer, offering a better field of view. You can apply a thin coat of silicon sealant to the inside and outside flanges before installing the unit, to help keep moisture out.

Perfect peephole for home, office, hotel, and front door where you need to see, monitor, spy, and peeking who is outside your door when the doorbell rings before opening, providing you extra privacy and safety. A must complement any intercom system, security door monitor, and door accessories. For Additional information regarding the product, please contact with Dubuy support team.