- Heart of the Plena Voice Alarm System
- EN 54‑16 certified and EN 60849 compliant
- Message manager and 240 W amplifier build‑in
- Six‑zone output
- 6 emergency and 6 business triggers
Bosch – LBB 1990 00 Plena Voice Alarm Controller
The LBB 1990/00 Voice Alarm Controller unit is the heart of the Plena Voice Alarm System. It is the basis of the Plena Voice Alarm System, and has all the essential functionality for compliance with the EN 54‑16 and EN 60849 standards, including full system supervision, loudspeaker line impedance supervision, a supervised emergency microphone on the front panel and a supervised message manager.