The alarm circuit controlling by intensity of usable light

Published:2011/4/8 2:33:00 Author:Ecco | Keyword: alarm circuit , controlling , intensity , usable light | From:SeekIC

The circuit is available for hunters, fishermen when working at dawn, because the light from flashlights or inside can trigger circuit, it is also used as a fire and burglar alarm circuit. Only the lights are off, the alarm can stop.



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