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Lbb 1965 00 Plena Message Manager
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LBB 1925/10 Plena System Pre-Amplifier
resources-boschsecurity-cdn.azureedge.netin combination with the LBB 1965/00 Plena Message Manager. There are six levels of priority available for BGM, microphone, call stations, trigger inputs and emergency input. A set of relays directs the amplifier output(s) to different loudspeaker groups (zone switching).