S. Siedle & Söhne Telefon- und Telegrafenwerke OHG is one of Germany's and Europe's leading manufacturers of building communication technology. The traditional family firm produces everything connected with communication in and around the house – at the same location for more than 260 years, renowned for its uncompromising quality and multiple prize-winning design. Siedle products are exclusively available from electrotechnical dealers. S. Siedle & Söhne Telefon- und Telegrafenwerke OHG, Bregstraße 1, Furtwangen, Germany.