This one's my final trip-wire alarm or wire-break alarm, for good measure. The circuit inside is elegant. I checked the Internet today for similar circuits. There are one or two, such as the
Wire Break Sensor Alarm or the
Wire Loop Alarm -- however, these do not offer instant and automatic resets as mine does.
OBSERVATION: Simple in concept, such an alarm can be triggered by (for example) a gate opening, a chair moving, someone walking across a lawn, and a great many things besides.
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