guscbe25 Member Profile in The AnswerBank

guscbe25

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Joined: 15:16 Sun 02nd Aug 2009

Last Activity: 15:56 Sun 02nd Aug 2009

Gender: Male

Status: Active

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guscbe25

Burglar Alarm working

How a burglar alarm works? Simple expalanation requested

guscbe25

optical burglar alarm

what is the working and explanation for optical burglar alarm with timer

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