Master Volume Control - Bosch PLENA Series Operation Manual

18 en | Operation
However, telephone/ 100V emergency announcements are always routed to all zones,
irrespective of the position of the zone selection buttons.
7.5.2

Master volume control

Use the master volume control knob (6) to collectively control the sound level of all outputs,
except the emergency announcement/signal.
2019-03 | V1.1 | Operation manual
PLENA Mixer amplifier, 4-zone, 240W
Bosch Security Systems B.V.