Storey controller in switch panel housing for connection of an additional storey door loudspeaker to the relevant system telephones HTS/HTC 811-…
Several storey controllers can be used in one system. Several calls are possible simultaneously, e.g. from the main entrance door loudspeaker to an in-house telephone and simultaneously from the storey door loudspeaker to a connected in-house telephone. Potential-free changeover contact WT/W0/WE e.g. for switchover from the door to the storey camera.
Separate power supply via NG 602-…
