Honeywell Decor Design Wired Door Chime Clean curve and simple lines Works with up to six transmitters: bell push buttons, motion detector or door contacts for added security and convenience Very simple installation - mounts vertically or horizontally Push button has feedback LED showing that signal has been sent to the door chime Low-battery indicator&lt;/li&gt;&lt;li&gt;CD-quality sound with adjustable volume and 450-ft range