expired Posted by iconian | Staff • Jan 5, 2022
Jan 5, 2022 10:12 AM
Item 1 of 5
Item 1 of 5
expired Posted by iconian | Staff • Jan 5, 2022
Jan 5, 2022 10:12 AM
First Alert BRK SC7010B Hardwired Smoke & CO Detector w/ Battery Backup
+ Free Shipping$25
$65
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I want my Americium-241 back!
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The 10 year life is a rule of thumb but I find generally good for ionizing detectors - the ones that use a radioactive source (which is most detectors, but also the "older" tech). Photoelectric sensors use light to detect interference (e.g. smoke particles but could be anything including water vapor and bugs). The reason ionizing detectors go bad is that the radioactive source decays to the point where it isn't as effective. For photo detectors, I guess they could go bad but it's more likely that they just get full of dust (or bugs, spiders like to make homes in them).
For as infrequent as you need to do it, spending $200 or whatever (dep. on the number of units you have) every 10 years or so is cheap insurance. - when you suspect one is bad, just change them all out.
I want my Americium-241 back!
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