Intruder alarm systems have in one shape or another been in use for over a century! Back in 1852, Edwin Holmes devised the worlds first electric alarm system. The design was based around a tripwire when disrupted this powered a solenoid that struck a gong. Thanks to technological advancement, today’s alarms bear little resemblance to [...]
Posts Tagged ‘Finding’
Intruder Alarm Systems – Finding Professional Advice Is Key
September 18th, 2010 
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Posted in Intruder Alarm Systems 
Tags: Advice, Alarm, Finding, Intruder, Professional, Systems 
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