With funny anecdotes from more than 30 years of life for the siren, the long-time managing director of HÖRMANN Warnsysteme GmbH, Dipl. Ing. Matthias Müllner, said goodbye to his well-deserved retirement yesterday in front of the assembled HÖRMANN community. With Anna Hörmann, who joined the management ten months ago, the daughter of the company founder now takes over the sole management. Matthias Müllner will not part with the sirens quite yet - for the time being, he will remain active for HÖRMANN Warnsysteme in an advisory capacity.