System 106 door station module aluminum - Compact voice module with integrated call button for communication between inside and outside. - A high-quality microphone and a weatherproof loudspeaker ensure good communication. - Power supply via 2-wire bus. Additional connection for central locking (e.g. required from 3rd camera module). - All other System 106 modules (except voice module) are supplied with power via the door station module. Professional labeling via the Gira labeling service {b}www.beschriftung.gira.de{\b}.