The low installation height of just 19 mm and the torsion-resistant surface-mounted housing made of aluminum profile are indicative of high quality. The cover frame is made of shatterproof thermoplastics with high UV stability, as well as a scratch-resistant, easy-care surface. Torx screws also provide protection against theft. The signal transmission and power supply for the audio and video components are carried out via the polarity-proof and short-circuit-proof 2-wire bus.