SOMO installs, commissions and maintains fire and smoke doorsets, hold-open systems, automatic door drives, smoke-extraction controls and escape-door terminals across Hamburg and Schleswig-Holstein. It is a registered Meisterbetrieb in the electrical trade and holds manufacturer certification from Hekatron, GEZE, ECO Schulte, dormakaba, D+H, Aumüller and DICTATOR — the manufacturer-authorised route that the DIBt guideline requires for hold-open-device acceptance testing.