Alarm monitoring services will vary depending on your location. You can compare nationwide companies ADT vs Brinks at http://www.alarmsystemreviews.com/adt-vs-brinks.html.
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A domestic company is one that operates in its country of origin and an international company is one that operates in multiple countries.
The best selling brands for a home alarm system are ADT, GE, Brinks, DSC and Honeywell. However other alarm systems that are cheaper in price can work just as well, the best alarms are the motion sensors which go off when there is movement.
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