About this trail:
Wireless alrarm systems for vacation homes, boats, construction sites, RV's etc. Use GPS, mootion sensors, cell or satellite communications to transmit alarms.
Trail link: http://www.trailfire.com/johnr/trails/32925
Summary: http://www.trailfire.com/johnr/trailview/32925
Summary: http://www.trailfire.com/johnr/trailview/32925
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