The Honeywell RPW204A1005/A Wired Surface Mount Illuminated Push Button Door Chime requires a door chime transformer and wired installation for illumination. This push button measures 5.5-inches (H) by 2.5-inches (W) by 1.65-inches (D) and has a stainless steel finish. The recessed mount is sleek and modern with a circular push button in the middle. Add this push button to any "B" category chimes for additional door alerts at the front, rear or side doors of your home. Honeywell's easy-to-follow categorization is a guide to find properly compatible chimes and push buttons. Wired chimes provide classic design, are easy to install and are more affordable than wireless. The Honeywell RPW204A1005/A Wired Surface Mount Illuminated Push Button Door Chime comes with a 1-year limited warranty that protects against defects in materials and workmanship.