The Honeywell RPW210A1002/A Wired Surface Mount Illuminated Push Button Door Chime features a UV-resistant plastic that holds its true color for longer than customary plastic. For illumination, this surface mounted door chime requires a door chime transformer and wired installation. This white push button measures 4.9-inches (H) by 2.85-inches (W) by .75-inches (D), and has a centered, circular button. 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 RPW210A1002/A Wired Surface Mount Illuminated Push Button Door Chime comes with a 1-year limited warranty that protects against defects in materials and workmanship.