Included in Package – 1 bright white direct-wire push button with easy-to-follow instructions and mounting hardware for confident direct wiring. Easy Installation – Compatible with doorbell systems up to 24V, this door chime ringer is a must-have for homeowners, business owners, builders or DIYers. Never Miss a Visitor – Always know when your guests arrive with this bright white direct-wire doorbell push button. Repair and Replace – Perfect for replacing old, worn out or broken doorbells in your home. Philips Family – This product is not intended for use with Philips wireless doorbell kits.