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Well, you could have a mains powered rechargable battery (or supercapacitor) backed detector. Then again, it better be designed so that the sensor part is repla
by AstralStorm 6y ago
Well, you could have a mains powered rechargable battery (or supercapacitor) backed detector.
Then again, it better be designed so that the sensor part is replaceable and it fails loud.
(Though neither supercapacitor nor nickel-* cells are very expensive, we put them in random MP3 players for $10 a pop.)
The feature richness is a scam though.
- brudgers 6y agoThe half-life of commodity rechargeable batteries is significantly less than the half-life of Americium. And people who don't proactively replace smoke alarm batteries are unlikely to proactively change the alarms...changing out an alarm is a bigger job than changing batteries. A smoke alarm is not a consumer product.