Mother Board RelaysMB-MBK Mother Board Relays provides 4 Class B speaker loop outputs, a maximum of 2 MB‑MBK cards provide 8 Class B or 4 Class A speaker circuits per Distributed PanelMB-MBKBosch Fire Phone System1.000đSoldOut
Mother Board Relays
MB-MBK
MB-MBK Mother Board Relays provides 4 Class B speaker loop outputs, a maximum of 2 MB‑MBK cards provide 8 Class B or 4 Class A speaker circuits per Distributed Panel