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Batteryless Smoke Alarm

by Justin Thomas, Virginia on 11.26.05
Science & Technology (electronics)

04181_400.jpgNo batteries required for this smoke alarm. Instead, it connects directly into ceiling mounted light sockets, automatically recharging whenever the light is turned on. Not bad — it involves less maintenance, and saves batteries from the landfill. The price is $39.95. :: First Street


Comments (2)

ive had one of these for about a year now, theyre really good, just pretty much install and ingore, no need to check batteries, just make sure that its installed in a light that is on everyday, otherwise you tend to get low battery warnings (beeps) during the summer. also if u hit the wrong switch and turn the light off then turn it on within 20 seconds(ish) it sets off the alarm (test) for 20 seconds, then does a fairly loud beep once a minute for 5 mins (to show its inactive), otherwise an excellent purchase.

jump to top Paul Hollingdrake says:

Shouldn't that image show a compact fluorescent light globe ;-)

jump to top Tim says:
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