Volvo Bus Dashboard - Cluster Selftest Diagnostics

This bad boy hit 1,000,000km recently. Just an observation, I didn't drive it through the milestone.
I figured that for the speaker test you had to manually scroll/advance through to the next sounds, so I've recorded that in a separate video.

[@amtrakmidwest4830]

Hello, do you know by any chance the part number or model of the cluster?

[@AndreaMouton]

what does the baby carriage light mean?

[@atypicalbusdriver]

Pram stop, although this light is not used. Specifically the documentation says "Entering or exiting the bus with a pram". I assume this is used in places where passengers have to press a button to enter the bus, and that is how they indicate that they might need the door ramp extended.
In contrast, wheelchair stops in Australian buses are usually indicated by three beeps of the bell instead (for Australian buses, mainly Volgren, Bustech and Custom Coaches bodies.)
While I'm here, I found documentation that shows what the other uncommon lights mean.
The green symbol with a woman on the left: "Service personnel". I assume it's for long distance coaches where there is an attendant, like in flights.
Two symbols to the right, the two wheels: "The switch forincreasing load onthe drive axle (bogielift) of the bogie is on"
Symbol above door brake: "Pre-heating on"
Symbol to the right of door brake: "Differential lock activated"
The WC symbols might be for toilets. Again, probably for long distance coaches.
Worth noting that this dashboard would be mounted on a variety of buses with different chassis and body configurations, and as such they have a lot of lights which don't necessarily apply to every bus.

[@franciscoarteagasanchez5197]

Where is located the speaker?