Heath Zenith Wireless Mechanical Door Chime with Peephole Through the Door Viewer. Do you want to be able to see who is at the door before opening it? Do you need a doorbell but can’t or don’t want to install wiring? This is the product for you. No Wires — No Batteries All in one chime and pushbutton 2 note melody. Product dimensions: 3.25″ x 7.875″

Product Features

• Mechanical door chime with viewer, 2-tone melody
• Mechanical tone bar sound quality
• No wiring needed
• Fits wooden & metal doors 3/4″ – 2″ thick
• Contents: Chime base and cover, name plate base and cover, installation instructions and hardware