Nicely retail packaged. Probably the easiest way to install a door chime -this kit takes two x AA batteries (which are not included). 75 decipel approximate max. volume. Operating range up to 320 feet (this means under ideal conditions without interference) It has a code selection button to avoid interference from neighbour's door chimes. 8 different melodies to choose from. The bell push uses a CR2032 battery (this is included in the pack). Fixing kit included.