The RITTO TwInnensechskant intercom and video systems are microprocessor-controlled using bus technology. It can connect three TwInnensechskant lines, each with a maximum of 30 users, as well as a bus line for a single door station that can accommodate 1 to 90 doorbell buttons. The system includes programming protection to prevent unintentional changes to the settings. It supports adjustment procedures via foot switches and features a door opener relay output with a maximum of AC24V 1A, adjustable door opener switching time, and LED function indicators for speech, door opening, and individual settings. The power consumption is a maximum of 34.5VA, with an operating voltage of AC11V 1.6A and DC30V to 15V 0.5A. The dimensions are W 125 x H 90 x D 60 mm. It includes seven sales outlets and additional devices. The system can be mounted in a standard distribution box according to DIN 43871 as well as in an AP configuration, with a power supply of AC230V 50Hz ± 6 to 10 percent.