Here is an excerpt from my local weekly paper The Hook:
“Boston Deputy Fire Chief Jay Fleming has become a pariah to people who tout, sell, or even give away ionization detectors, the most common type (of smoke detector). He believes they’re nearly useless, and our test showed why.”
So I searched for them on zlert, the search engine for Amazon product alerts:

There may be nothing at all wrong with this model, but with zlert you can set up an alert just in case.
Check out their video here:
















