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Home Do It Yourself Laser Tripwire Alarm – Use Mirrors to Make a Multibeam Tripwire 7 Do It Yourself Laser Tripwire Alarm - Use Mirrors to Make a Multibeam Tripwire 7

Do It Yourself Laser Tripwire Alarm – Use Mirrors to Make a Multibeam Tripwire 7

Do It Yourself Laser Tripwire Alarm – Use Mirrors to Make a Multibeam Tripwire 6
Do It Yourself Laser Tripwire Alarm – Power the Laser Pointer with the Alarm Circuit’s Battery Pack 1