How To Make Tripwire Laser Alarm
38 بار بازدید -
6 سال پیش
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Tripwire laser alarm that its
Tripwire laser alarm that its made from household items like night lamp with sensor and any kind of laser,you can set on door.
How alarm work,laser beam reflect the sensor from night lamp and light will power up when laser beam is cut off.
6 سال پیش
در تاریخ 1397/08/03 منتشر شده
است.
38
بـار بازدید شده