hpr2028 :: Some basic info on alarm systems - Âm thanh Lưu trữ Miễn phí

hpr2028 :: Some basic info on alarm systems - Âm thanh Lưu trữ Miễn phí

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Summary: A very basic intro into some alarm equipment

Source: [http://hackerpublicradio.org/eps.php?id=2028](http://hackerpublicradio.org/eps.php?id=2028)

A very basic bit of information on some alarm equipment.