Bus technology with reverse polarity protection. All information between the door station and the telephone is exchanged via two lines. The wiring can be done with up to two risers, so that inspection and maintenance work on one riser does not affect the rest of the system. Up to 8 different ring tones, both for the door call and for the floor callProduct features:Built-in door loudspeaker can be used for installation in GROTHE special door stations for installation in letter boxes and door side panels Volume can be adjusted Ring tone signalingTechnical data:Compatible with the BiBusmax system. 18 call buttons can be connected Button extension with EM 1038/17 78 x 129 x 26 mm Installation accessories: TLZ adapter S and WInstallation instructions:Note:
