Simplex 4903-9221 Fire Alarm Overview/Test

The mechanical Simplex 4903 series horn/strobes happen to be one of my favorite devices, it is the first fire alarm device I have been exposed to that I remember. For a while, I have known about a possible off-white version of the mechanical 4903 series, but had not been confirmed until recently. When I learned that these were on sale on eBay...you know what I had to do! As such, I am another proud owner of these of these devices.
Basically, to sum it up, this is essentially an off-white version of the Simplex 4903-9219 from the mid-late 1990's, this particular one was made in 1997. I have seen one video in the past (don't think it is still around anymore) of this particular variant of the mechanical 4903's installed in a system, but do not know of any other systems that have these particular devices. I believe this would make this a "rare" device.
The model # -9221 is part of the 15cd line of the mechanical 4903 series. This includes the famous 4903-9219 (red, horizontal mount) and the 4903-9220 (red, vertical mount, I have made a video of this device in the past). I am not sure of any other model #'s of the other candela variants in white (the 30cd, 110cd versions), but if anyone knows, please feel free to let me know.
This is a device I've always wanted to feature on the channel for a while as part of my series of overview/test videos, and am glad I had the opportunity to do so! Also, wanted to say THANK YOU for 4,000 subscribers!
DISCLAIMER:
1: It is a FELONY to pull a fire alarm in public to falsely report a fire (i.e. "Just for fun"). A fire alarm in a public building should only be pulled if there is actually a fire or other emergency. However, this is being activated in a controlled and legal environment, an enthusiast's test setup. No fire departments were called when activating the alarm.
2: This video contains flashing lights from a strobe. Those prone to seizures from flashing lights SHOULD NOT WATCH THIS VIDEO.
I AM NOT responsible for any legal damages done for pulling a false alarm, or for any seizures. These are your decisions, not mine!