The Zen Doorbell's distinctive sound can be used in a variety of ways: its primary use, of course, is as a doorbell for your home. But it also serves as a paging device (so you can summon your butler, or more likely your kids to the dinner table); and it's great for retail environments for use as a front counter bell. The Zen Doorbell can also be used to call meetings to order, or as a way to signal an accomplishment or the scoring of points. But no matter how you use it, we know you will enjoy the beauty of the naturally-resonant sound of its rich acoustic gong. The wireless wood control button has a 40 foot range and comes with its A23 type battery pre-installed. The Zen Doorbell's wood platform is powered by 4 "C" batteries (not included). Each Zen Doorbell includes a 24 page booklet detailing its operation and uses.