Remote paging console with priority input on mic 1 and selectable 2 or 4 tone pre-announcement ringtone for MPA-5 42240 and MPA-5 42350 amplifier. Gooseneck condenser microphone. The call can be addressed to one of the 5 zones or to all of them. Ringtone volume control. 10-segment VU metre An additional power supply is required when the distance from the base exceeds 50 metres.