Rare Smoke Detectors

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Alexis_T
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Thu Sep 20, 2018 1:04 pm

Hey there!

It's been a while since this question is really bugging me... Is an Ademco 623-12 (aka Chloride Pyrotector SENTINEL in this old 70's ad) Smoke/Thermal combo rare ? I don't know if in the US/Canada it'll be considered rare (IIRC optical smoke detectors were invented allegedly in the early 70's... Not sure if it's true or not.) I already have a picture of it on my collection topic.

In short, I'd like to know more about it, ever since I saved it from being thrown away it has always intrigued me, as for the life of me I can't figure anything out of it aside that it's a combo detector, is 4 wires and is from the late 70's.
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glitchyuniversefa
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Thu Sep 20, 2018 5:57 pm

EdwardsFan wrote:
Wed Sep 19, 2018 10:31 pm

Welcome to the forums! I'm not exactly sure when those were produced, But I believe smoke alarms should be replaced every 10 years. So probably best to replace it with a newer working one!
Thanks! I told the people there about it and they were kinda skeptical. Apparently they have an inspector come through once and a while to test their fire extinguishers, and the inspector thought the detector was alright to be up there. It definitely looks older than 10 years old, though. I'll be sure to tell them about it. Also, I saw there was a recall back in 2014 on these models, so hopefully that will convince them that it needs replacement.
93shadow
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Tue Dec 18, 2018 2:47 pm

Here's an oddball I recovered from my aunt's former rental home, while she was moving out. For the 10+ years she lived there, I was suspicious as to what it initially was. Only until she moved out, I realized it was indeed a vintage smoke detector. At first, I thought it would have been a hardwired detector, but after removing it from where it was previously mounted, I was surprised that it was a battery operated model.

What's really odd is the Sears sticker complete with a model, but one guy on Instagram pointed out it's an ESL, possibly missing its front cover too.

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benson41011
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Tue Dec 18, 2018 9:34 pm

That guy was me, lol. That is a very rare unit you've got there, never seen one before and I don't think Nathaniel has one either.
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missj_73
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Sat Dec 22, 2018 9:16 pm

Hey guys well I finally got my First Alert SA76RS tested with candle smoke last weekend. I did it wall mounted and cover off and it sounded within about 2 seconds. Also had the candle lit a few seconds before I blew it out and oh yes it worked and it sounds a bit louder smoke tested then tested via push button, the video is on youtube if you want to watch. Another great thing is last Saturday I FINALLY got my Nortron TR88 to sound, I went to a workshop that the woman who I rent my basement apartment from told me about. Below are pics of what was done to it but the sound is the low vibratory buzz of the AC smokes of that era and although there is no date on the detector the guess the guy made was late 1970s to about 1981. My friend upstairs from me said she had the same unit growing up in her old house but it made the high pitch squeal so it was definitely the TR77 she had and that must have been the unit featured in the Guinea Pig episode of Littlest Hobo from 1980. One thing though because the age of this detector the incandescent bulb that is supposed to activate when the alarm sounds (on both models) no longer works. However when plugged in and powered the LED goes on and the unit has a hum to it. You can see the LED powered off towards the bottom of the unit and the sensor on the left side of the unit. The horn which isn't very visable is almost adjacent to but slightly higher to the right of it. This unit was so powerful security came to see what the noise was. LOL! Both videos are on youtube so if you see them let me know what you think. All 4 of my alarms in my collection work. Next mission is to located the TR77. Also Merry Christmas and all the best for 2019!
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missj_73
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Sat Dec 22, 2018 9:23 pm

Here is the other pic front view of the TR88.
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missj_73
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Sat Dec 22, 2018 9:39 pm

One more mention that third wire that is not hooked up was the line cord that could hook up to 20 units (yes 20 and back then that would have been something) so that if one went off so would all the others. I know I couldn't sleep through that. I also found the AC sound way more powerful than the DC squealer.
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benson41011
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Tue Dec 25, 2018 8:11 pm

Got a SUPER rare unit today from my parents, a BRK 3000. Has a modified 77R PCB with both ionization and photoelectric sensors with interconnect. Regular tiered test button is for the ionization sensor (strangely there's an LED underneath it, the 77R didn't have an LED) and the black crayon tip button is for the photoelectric sensor. Regular Kobishi CLB-27 brass squealer. The ionization sensor is the regular coffin-shaped one but it only has 1uCi instead of 5 like they always had. First Alert had a version called the SA300 and Sears rebranded these as well.
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FPNewbie
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Thu Feb 28, 2019 1:34 am

Hi, I am a newbie here. I stumbled on this thread while researching for Entronics Corp, to figure out what happened to them. It turns out they got bought out in the late 70s and they disappeared. However my aunt has lived in her house since approx 1978 and still has the original smoke detector/alarm made by Entronics, a Z-100 model. It is still hard wired in the circuit and has the little red ready light visible. We will need to upgrade to a current smoke detector, so this one will be "retired". This one still has the factory sticker inside the cover and the little red "Test Weekly" sticker stuck on the outside of the cover. Anyone had any experience with these early detectors?
missj_73
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Sat Mar 02, 2019 8:46 pm

Welcome to the forum, those older detectors in my opinion were much better than the ones of today. The older ones had the louder electromechanical or squealers horns as opposed to piezos used today. The older horns were much louder and more effective but with a detector that old is not to have it in use but just as a collectors item if you are into that stuff. I used to be terrified of the noise these ones made (I was born in 1973) but now I am actually fascinated with them as collectors items. If you have no interest in keeping it I will take if off your hands even though it is hard wired. I acquired my First Alert SA76RS from someone else here in the forum. He was not a collector and I am. I also have a Nortron TR88 hardwired (AC) model that I was able to get working from a Tool Workshop in the city were I live. If you want feel free to PM me here. I have a small collection of detectors but I hope to get more eventually. Since I don't have an ebay account I try this forum or second hand stores., That is how I found the detectors/bell I have now.
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benson41011
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Thu Mar 21, 2019 8:43 pm

FPNewbie wrote:
Thu Feb 28, 2019 1:34 am
Hi, I am a newbie here. I stumbled on this thread while researching for Entronics Corp, to figure out what happened to them. It turns out they got bought out in the late 70s and they disappeared. However my aunt has lived in her house since approx 1978 and still has the original smoke detector/alarm made by Entronics, a Z-100 model. It is still hard wired in the circuit and has the little red ready light visible. We will need to upgrade to a current smoke detector, so this one will be "retired". This one still has the factory sticker inside the cover and the little red "Test Weekly" sticker stuck on the outside of the cover. Anyone had any experience with these early detectors?
Welcome!
I have some experience with Entronic Vigilante units, I used to have a Z-700, similar in appearance to the Z-100 but took a 12.6 volt Mercury battery instead of being hardwired. These always used Radium 226 instead of Americium, the sensor was quite unique and consisted of a small chamber and a "target", and they all had Kobishi CLB-27 squealer horns (hardwired one used a transformer). Vigilante's are quite rare these so I'd definitely hold on to it.
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