The Bosch PVA-4CR12 is the PAVIRO controller: 4 audio channels and 12 loudspeaker zones on board, up to 492 zones with PVA-4R24 routers, with EN 54-16 voice evacuation and message management built in. Scroll down for details.

The Bosch PVA-1WEOL supervises each PAVIRO loudspeaker line to its end for open and short circuits, as EN 54-16 requires, on 50 V, 70 V and 100 V lines. Scroll down for details.