Ah yes, another video of a Simplex speaker/strobe here on KZitem...this time, with a twist!
This particular device at first glance is much like my 4903-9220, the vertical mounted version of the 4903-9219. However, it's not a mechanical horn in that vertical mounted shell this time around. This time, we have a speaker! Essentially, it's the vertical mounted version of the Simplex 4903-9146, another alarm I have tested a while back.
Why would I say this is pretty much the same as the 4903-9146? For starters, both alarms use the same speaker and transformer assembly, and are 25V speakers. Next, the two strobes are both 15cd. There are some differences to the two alarms, though. The -9146 was made in 2000 (according to a date stamp in the shell), while the -9147 you see here was made in 1994 (according to the sticker label). Actually, it's older than my -9220 (mine was made in 1996).
Essentially, these vertical mount 4903's are mostly marketed as retrofit devices, ideally to replace a 2903 series strobe/light plate, or a 4903-9101. This particular device would probably be a replacement on an existing voice evac system, or an upgrade from horns to speakers. Retrofit is obviously not the only intention of this device, there's quite a bit of original installs that use these vertical mounted 4903's.
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.
3: The voice evac messages heard in the video are demos from the companies they come from. They are being used to simply demonstrate the speaker of the alarm.
I AM NOT responsible for any legal damages done for pulling a false alarm, or for any seizures. These are your decisions, not mine!
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