Rare Smoke Detectors

WHAT IS THIS!!!


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Looks like part of a patent for the BRK 100S or SL177 to me!

Are they insanely common or nearly extinct?

Well, they’re not that common, but they are seemingly at least common enough for Google to have photos of them.

I found a patent for a single station ionization smoke alarm granted to Hochiki

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General Electric C4 knockoff

Is the 83R family of alarms rare?

All depends on what you’re talking about: when it comes to actual BRK 83Rs, yes from what I can tell, but when it comes to detectors that BRK just slapped an 83R label on (as they have been known to do this for whatever reason), it all depends on the model, though the ones that are technically renumbered SA67Ds & FG888Ds might be.






My rare FG888D transitional model. It has a white test button, false alarm sensor, and even an LED! (Unlike most models) And I think I’m the only one to own this particular variant.

Oh wow, that’s a heck of a rare & old FG888D! Had no idea that there were any with that old of a sensor design!

A notable one for me is identical to that, but has the newer metal-&-plastic sensor (the kind that’s black & silver), a transparent test button, & (despite the previous thing) no LED (kinda the opposite of yours actually). I had this variant years ago & would love to be able to again (once I thought I had finally found one, but not only did it have an LED, its horn also did 4/6 instead of temporal 3).

One interesting thing to note is that some FG888D packaging actually depicts a white-button version like that one, even if the detector inside has a transparent button instead (which is the case with that one 4/6 FG888D I said I have).

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Here’s the label from my Family Gard


Is this rare?

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My first alert is a SA67D

It’s more of a known thing in the smoke alarm side of the community.

See the first gen FG888Ds mostly have white test button and false alarm sensor, but no LED.

Infact, that’s how it is for every smoke alarm enthusiast that owns one other than me.

Just in case you haven’t heard, I found these three norelco smoke alarms in the same house.
Screenshot 2025-10-10 093028
Screenshot 2025-10-10 093109

I also found a bunch of other stuff.

  1. NuTone
    Screenshot 2025-10-09 110940

  2. ESL



    Screenshot 2025-10-11 102729

  3. More ESL
    Screenshot 2025-10-10 102403
    Screenshot 2025-10-09 103102
    Screenshot 2025-10-10 154138


4.Even more ESL
Screenshot 2025-10-10 154616
Screenshot 2025-10-09 175444

  1. Gentex

  2. Presto SmokeSiren

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Yeah, it’s just mislabeled as an 83R (since like I said BRK has a habit of doing that for some reason).

Not 100% sure what you might be trying to say, but it is odd the way some Family Gard-style detectors have an LED & a white test button or no LED & a clear test button (since one nullifies the other).

Do you say “false alarm sensor” because that style of BRK ionization sensor is known for causing frequent false alarms? (I believe I’ve heard about such a sensor from some enthusiasts, but have no idea what kind it is if that is the case)

Excellent finds there! Now if only we could ensure every last one of those ended up preserved in good hands…

My family gard has a white/clear LED

Oh yeah, that’s another thing: it seems to vary at random whether that style of BRK/First Alert detector has a clear LED or a red LED.

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Alright, I’ve got a somewhat odd request: I’ve spotted this at a store near me, and I thought initially it was a ESL detector, but something tells me it actually is rare enough to be worth posting here.

I would like to know if, anyone on this forum could help me identify what this lil’ dingus is, I have no clue where to post this so I hope this is fine.

All I know is that:

  • it has a heat sensor or a test button

  • it’s about the size of an Ademco 623-12, though it isn’t one

  • it seems to be on a raised base (?)

Also in the same store, there was this weird Universal Det detector, excuse the ultra zoomed in picture:

Knowing that my country has banned ionization smoke detectors a whole decade ago, I’m quite surprised to see that this one and a few other (counted around 5 or 8 in that location!) were seemingly left abandonned in place.

That’s a DSC AMS-220: there’s at least one Youtube video of one supposedly in a North American home, but I had no idea that they might be able to be found outside the continent as well! (though then again considering DSC sells their latest systems with selectable languages maybe that shouldn’t be a surprise after all)

According to a diagram that’s its LED (it’s also addressable & meant for use with specific DSC security panels according to that same diagram).

Interesting…kinda looks like both a typical Hochiki “wiffleball” detector & a Fenwal PSD 7130.

Hope they’re somehow saved at some point.

Hey, thanks, that was fast! As to how this thing ended up there, I have no clue, I couldn’t see any remnant of a DSC system anywhere in the building.. (though coincidentally the Ademco 623-12 that’s in my profile picture did come from a different DSC system) most security systems I see in my area often have ESL/Interlogix (*cough* Aritech) smoke detectors, so that’s a bit unexpected to say the least.

I can’t say for sure given how high it is but it looks almost like a heating sensor disk as found on some Hochiki detectors.

Now that you say it, yes it looks a bit of both, although with some chrome paint on them, here’s a better picture of one (original source):

I hope so, though given the ban on ionizarion detectors in my country, if they get uninstalled they’ll most likely be sent in to be dismantled, although there’s a tiny chance these might slip through the cracks (knowing some companies don’t bother and just leave them for the customer to dispose of), in which case, there’s a chance I might be able to save them.

Although, from what I could observe they were near a smoke vent, so perhaps those were never tied to the fire alarm system in the first place, I’ll have to go back there and check for myself, eventually.

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