Portable Chime with Belt Clip Or Pager Mount botton anywhere with screws or two way tape (included). Bring chime with you, EVEN COMES WITH A BELT CLIP. Think of the many uses Now you can work around the yard and not miss the door. Put a botton at your office door when your in another part of the building. Put one in your cubicle so your boss can page you. Put one at the front desk for waiting customers. Add or replace broken doorbell. Other Features Up to 100 feet operating range One year warranty Installs in minutes no wiring Button battery preinstalled (9volt) Chime uses (2) AA batteries (not included) Pleasent Ding Dong sound