DB-1SD Aiphone Sub Master Station for DB-1MD This audio hands free sub station features an aluminium faceplate and has the capacity to join up to four connecting units to a master station. The system is designed to be ideal for most indoor installations as it features various functions. These function include door lock release, room call, call tone volume control, receive volume control and a speak now function. Interior units communicate by placing an All Call announcement to all other units, answering the call from a different point inside creates point-to-point communication. This device uses four wires between the master and sub station (daisy chain wiring method only) plus two additional core for the power. Some Features for DB-1SD Aiphone
All Call between stations in same residence / office.
Option button for external device control (N/O dry contact, AC/DC 24V 1.6A Max).
Call tone volume control with LED mute indicator.
Receive volume control.
Optional Call Extension Speaker (IER-2).
Optional external signaling to 3rd party bell or light using RY-ES (used in lieu of IER-2).
Door release button (powered by door station).
Specs DB-1SD Aiphone Communication Hands-free (VOX) or push-to-talk (simple(more...)