Early Simplex 4050-80 light plate variation

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United States Zak Wolf
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Published on ● Video Link: https://www.youtube.com/watch?v=YbK8KD6c7rE


Duration: 0:32
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Here's a rare fire alarm device that hasn't been shown on YouTube yet. It's an early version of the Simplex 4050-80 light plate where the horn ( in this case, a Simplex 4051) is completely recessed into the light plate, instead of sticking out a bit as usual. These were made back in the early 1970s.
I got this from an elementary school in my city (where a few of my brother and I's teachers now work) that had a fire alarm upgrade during spring break. Since the original light circuitry uses a 125-VAC lamp (yes, for some reason, they used 125-VAC signal lights with 24-VDC horns), I swapped it with the one from my newer 24-VDC 4050-80. The black box behind it is a NAC coding device I got from NewAgeServerAlarm.

I would upload this on my fire alarm channel, but I lost the password to it.

Caution: LOUD!



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Tags:
simplex
4051
4050-80
fire
alarm
horn
light
plate
signal
old
vintage
1970s
loud
drill
test