Door switch device that enables the installation of SimpleBus systems with >240 participants. Can also be used in systems for several single-family homes with centralized door control and porter switchboard. The signal switch enables cascade distribution of the bus line as an alternative to star distribution and optimizes the wiring topology of the system part of the video mixer Art. 4888C. With self-feeding of the LS input, LS for managing the riser without a special additional door station. Supply voltage 12V AC (can be used with Art. 1200) or 20V DC. Dimensions: 60x85x35mm (4 DIN modules).
