![AIPHONE™ GT-BCXBN Audio Control Unit [I176N9]](http://en-shop.sysaway.com/cdn/shop/products/I176N9_grande.png?v=1706627417)
Reference:
I176N9
Electronic audio control unit for extended system. Expand the Intercom BUS. Power supply: 24 VDC (Source PS-2420UL not included). To install on the DIN rail.