Yah, it's pretty trivial. Get a 9v 'wall wart' DC power supply at Radio
Shaft, run the DC to all the smoke detectors.
To get fancy, buy a 'smart' 12v battery charger, connect to a 12v
battery, run that to all the detectors. Now you've got battery backup
(assuming the alarm system will work without AC).
Most commercial fire alarms already have all this built-in, I don't know
about the multiple-sensor home units.
Randall - not an EE, but close
Scott Hall wrote:
>
> can you (or one of the great ees lurking about) not convert a battery
> powered unit to a 115v house current unit?
>
> scott, electicly ignant
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