DELTA profile, titanium white frame, 1-way, cut out 80x 80mm DELTA m-system - design and quality in perfection from Siemens. Our m-system offers different module inserts for reporting and communication purposes. The Siemens m-system offers the following advantages: 1. Due to the modular design, the inserts can be used with DELTA line, DELTA miro, DELTA profil and Delta style. 2. A module carrier can be equipped with up to two different functions.