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Ritto Expansion Module for i... 1879900$79.52
For acoustic feedback of the bell signals at the door station. For installation in surface-mounted or flush-mounted porter frames. Can also be used in conjunction with built-in loudspeaker.
1x required per door station. Accessories built-in loudspeaker 14921xx Note A cross connector 18797xx is required in conjunction with the built-in loudspeaker 14921xx.