| http://www.w3.org/ns/prov#value | - This decrease is mainly attributed to a $2.3 million, or 57%, decrease in sales from electronic surveillance equipment operations offset by a $1.2 million, or 32%, increase in personal defense and law enforcement aerosol operation, and an increase of $340,000, or 12%, in wholesale security monitoring operation, which includes the acquisition of a monitoring center TCCI, on March 31, 2011.
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