control unit intercom BUD-301 works in a set c BVD-311, BVD-321 (VP), BVD-341; duplex speakerphone communication with the subscriber; opening the door of the castle; controller keys VIZIT-TM; memory 600 keys VIZIT-TM; work with remote control Concierge VIZIT; the ability to record, erase, rewrite the overall package and individual code lock opening subscriber; opportunity to work with memory chips of the blocks call BVD-SM100, BVD-N100, BVD-C100, BU-K100.
