Books & DVDs
 Home Security: Alarms, Sensors and Systems: Vivian Capel
Our Price: $50.94
As well as describing the bewildering range of security devices on offer, more technical readers may consider their own solutions using descriptions and circuits for two simple tested designs are given, one for the home and one for a foolproof public hall system. There is a plethora of security devices now on offer. Large sums can be spent on elaborate...  more info
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