Butlers Bells are mechanically operated using a pulley and cable system - they are not electrically wired in any way. The kits include all cables, bell pulls and pulleys required to install a fully working system. There are brass and chrome versions, and 2 models of bell pull, a heavy iron traditional black vertical pull and round brass or chrome horizontal pulls with “Ring Bell Pull” inscription. Full instructions are supplied [ Click Here for Instructions ]. The bells have a beautiful traditional sound – [ Click Here to listen ] . If you prefer your Butlers Bell to be electrically powered by either batteries or linked to the mains via a transformer, we have 2 models. [ Click Here for Electric Models ]