[loeg]

> The cost of a false alarm for a smoke alarm is borne by owner of the smoke alarm.

By the tenant, anyway. And any of the tenants' neighbors close enough to hear the shrieking.

> The car alarm owner is forcing an externality cost onto society; there is no incentive for an individual car alarm owner to reduce false positives so it is no surprise the products are so bad.

Modern smoke detectors also have extremely high false positive rates. I've lived in two buildings built after 2009 since 2013, and in both, if you so much as look sideways at a piece of toast the alarm goes off screaming "Fire!" at 120 dB. Nevermind trying to broil steak...

[wnissen]

I read that a photoelectric smoke detector gave far fewer false positives and found that to be the case. No more alarms when boiling water or making a stir fry. This one is very affordable, if you have control over your smoke detector.

https://smile.amazon.com/gp/product/B00PS6EFIE/

[loeg]

Do you have the product name? The link seems to be broken.

[wnissen]

It was an X-Sense DS31, looks like it has been replaced by this one: https://smile.amazon.com/X-Sense-10-Year-Battery-Detector-Ph...

[loeg]

Thanks!