If you need a doorbell but are a little nervous about doing your own wiring, then wireless is the way to go. With Heath Zenith's wireless doorbell systems, all you need to do is mount the doorbell and the chime-no electrical installation is needed.The SL-6155 features an attractive step-design cover and offers a generous 150-foot range. Different chime tones let you know which door you need to head to. You can also select from 128 code settings (which allow the doorbell to communicate with the chime) to make sure your neighbor's wireless systems don't set of your chime.
The battery for the push button is included, along with all the mounting hardware you'll need. Note that you will have to supply three D batteries for the chime.--Josh Dettweiler
What's in the Box
Wireless chime, wireless push button with battery, hardware pack