Flat ringer doorbell duroplast housing

Bell with electric ringing mechanism from the 1960s, in which a black Duroplast housing conceals a neat electrical and mechanical system. As you know, these melodious devices are not to be connected to an ordinary house power line, but to a bell wire with an upstream transformer (output voltage 8-12 V~). If you simply remove your old bell and replace it with this one, you won't do anything wrong (acoustically and electrically). Otherwise an electrician will help you. The bell is optionally available with sound shell or also with a brighter sounding flat shell.