A heat alarm using a bimetallic strip. Very simple device, and very nifty. 'Very simple device' is quite the understatement. The bimetallic strip (the little lever below the battery) closes the contact when it heats up, and sounds the horn. That's literally all it does. The only thing that I could think of that could cause *that* to stop working (apart from missing/dead batteries) would be corroded/oxidized contacts, but it's really simple. Cool vid!
Thanks, the horns on these detectors often wear out over time too. So if these still work that is really good. These are definitely hit and miss. I have several in my collection as I mentioned and I have been able to get some of them to work. I have 2 Merlites that unfortunately I can't get to work as the horns on worn out. I have tested this one since with a hair dryer and it works great.....actually better than great with this alarm as it works too well!! I was impressed!!! A hair dryer is basically a way of knowing if they work or not. Definitely a rare and cool piece and collector worthy.
A heat alarm using a bimetallic strip. Very simple device, and very nifty.
'Very simple device' is quite the understatement. The bimetallic strip (the little lever below the battery) closes the contact when it heats up, and sounds the horn. That's literally all it does. The only thing that I could think of that could cause *that* to stop working (apart from missing/dead batteries) would be corroded/oxidized contacts, but it's really simple.
Cool vid!
Thanks, the horns on these detectors often wear out over time too. So if these still work that is really good. These are definitely hit and miss. I have several in my collection as I mentioned and I have been able to get some of them to work. I have 2 Merlites that unfortunately I can't get to work as the horns on worn out. I have tested this one since with a hair dryer and it works great.....actually better than great with this alarm as it works too well!! I was impressed!!! A hair dryer is basically a way of knowing if they work or not. Definitely a rare and cool piece and collector worthy.
cool！
@@えれくとちゃんB Thank you.
@@janeaton3417 I live in Japan and love smoke alarms
@@えれくとちゃんB I am in Canada and same here, If you have smoke alarm videos or collections you have I would like to see them
@@janeaton3417 I collect Japanese smoke alarms and make videos of them.These texts also use Google Translate.