Wow! That is a pretty cool fire alarm. At first I thought all of the Wheelock fire alarms would sound very loud but I was wrong. This one sounds like a chime.
Newer CH70/CH 90s, according the instruction sheets as of 2018 have a different configuration. It still features the volume screw, but no tone screw because it uses a fixed 890hz tone and the jumper for single stroke and vibration was replaced with DIP switches for 2hz (0.5 seconds), code 3, 1hz (1 second) and coded.
These are cool. I find these Wheelock ones fascinating, as it's a Speaker/Strobe, simply with a tone generator on the back as opposed to a transformer for audio. This also has a nice sound, as opposed to most other electronic chimes. I have a CH-90, and it's fun to set off.
That would probably be the E70, the version that looks like this, but is only a speaker and a strobe, used for evacuation messages. The one in this video is most common in hospitals.
Yes it does because the sound resembles an electronic toy piano, and it's based off of the E70 speaker strobe but, with a tone generator and a small class D amplifier slapped on it instead of an audio transformer.
that's the kinda alarm that's in my middle school but the alarm is flipped upwards not sideways and also does a slow woop but the woop is more different then other Wheelock alarms its weird
