Enhance your entryway with a Philips Plug-in 2-Melody Doorbell Kit. The plug-in doorbell pairs with up to four wireless push buttons and features two melodies (ding dong and Westminster) to customize multiple entryways with separate sounds. For additional personalization . adjust the sound level using four volume settings. The push button comes already paired with the receiver. Mounting instructions are included for the push button while the receiver simply plugs into a standard grounded . three-prong outlet. The wireless setup . provided mounting hardware and up to a 150ft. range making installation of the doorbell kit a breeze. The white finish allows the doorbell and button to integrate into any d??cor. With a Philips Plug-in 2-Melody Doorbell Kit.