DIY Wireless Hybrid Alarm Systemsby Marshal M. Rosenthal, ehow.com
A wireless alarm can activate a light or a horn to warn the inhabitants of a house that an intruder has entered. To make a hybrid wireless alarm that uses a siren powered by the house's electricity, acquire the horn from a hardware store and a wireless alarm kit from a security supply shop. Tools that are commonly found in the home will be needed, as will a basic understanding of how electricity works. Does this Spark an idea?
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