Sears 246.57311 smoke detector demo video.

A demo of my Sears 246.57311, a relabeled BRK 3000. I had made this many days ago, but YouTube finally uploaded it.

Category:

Science & Technology

Tags:

• Sears
• Smoke
• Detector
• Alarm
• BRK
• 3000
• Ionization
• Photoelectric

[jshell757]

WOW!! RARE FIND!!! I have the First alert one that you showed towards the end. I also have a 1979 Sears alarm that has a Heat sensor on it. Brass Squealer.

The first alerts did not have interconnect, the Sears ones did.

The reason for the photo delay is it actually blocks/scatters the light source and will take up to 20 seconds.

I also have an MID-80's ADT Photoelectric 9 volt alarm. Original Box, from Channel Hardware.

Game alarm, that is the first 9 volt ion/photo combo.

[NLind]

Can you demo thee '79 Sears and the '80s ADT? Please?

[hyperbaricchicken101]

Actually if the alarm were to be interconnected the three little tabs would be in the shape of a triangle and on the back of the unit. Those three little tabs that you showed are for connecting an additional device to the alarm such a a hearing impaire strobe light.

[jshell757]

Trucksoner..... From personal experience, being in the fire service, and doing research... NEVER, EVER TRUST AN ION Detector to save you from a smoldering fire.... EVER!!!! They do a HORRIBLE job detecting "Cold Smoke" Always go photo, you will not regert it.

[trucksoner]

@jshell757 but now i found this video from koldnews13 called "smoke detector dangers"...hmm.  btw i'm sorry if i just gave you 3 separate emails

[trucksoner]

@jshell757 oh btw, i actually just tried holding a lighter a couple inches under a rolled up kleenex and a few seconds later it turned brown and my ionization detector (which admittedly was right in the same room, almost right above) went off.

this makes it seem like it would be ok for smouldering fires, but maybe not, because once i accidentally had a ping pong ball burn and make a huge cloud of smoke that was down 2 feet from the ceiling, and it didn't go off. diff. sized particles i guess?

[trucksoner]

@jshell757 i've heard that thing about ionizations only being 44% likely to save you from smouldering fires, apparently came out of a study from 1994.

i would like to see the conditions of the test though, because i'll bet if the fire was in the living room with an alarm above it and you were in a closed bedroom with a window exit it would be fine. or if you had an alarm in each bedroom like i do

i've also heard that a 20 year old alarm is 60% likely to not even go off, even with batteries

[coffeeandsugar20]

Can you test the First Alert FA-300 please?

[coffeeandsugar20]

You said Sears 246.57311, but the title says 236.

[jshell757]

You wanna know what is scarry? I would still trust that alarm today to protect me Verses a stand alone new ionization only alarm.

Remember Ionization Only+Smoldering Fire= Dead Man.

In most cases the CO and toxic gas will either incapicate you, or kill you before an ionization alarm will sound to wake you up.

[jshell757]

I have to dig them out, but yea, I will.