C.H.Byron are a long established company with several ranges of quality doorbells and chimes. They supply a range of wire free and wired chimes, most of which are shown on this web site.
The Byron SX Range offers a wide choice of chimes. There are contemporary, traditional, and functional choices. All the chimes in the range will work together except models SX-4 and SX-41, (which are in fact TX model chimes). There are several Wall Mounted chimes, with most having a mechanical bell action. The wired to wireless extender option model SX-32, works with both the SX and SXi, ranges to allow you to extend an existing wired chime/bell system with wireless chimes, or to allow the connection of attractive wired bell pushes to a wireless system, as an alternative to the standard black or white plastic bell push.
The latest BY Range offers both portable and plug-in models with good quality sound, and distance options of 50m, 100m and 200m.