DIY – Make an alarm system in 3 minutes! (Part II – Add a motion sensor)

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The other day I was walking through RadioShack and found this neat little Motion-sensing Door Chime/Alarm.

Since I already had an alarm system, I decided I could simply add a motion-sensor to my existing alarm system.

Full DIY via Link

Full DIY via Link [html in english]

One Response to DIY – Make an alarm system in 3 minutes! (Part II – Add a motion sensor)

  1. Izl says:

    How much did that cost? motion sensor.

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