I've been with them for several years and they always provided impeccable service. Plus they don't try to oversell you on features you don't truly require. Unlike another big-name organization that has a habit of saying you NEED certain types of add-on features to their system when really you don't.
CST offers superior security coverage for both reasonable installation fees and monthly monitoring rates. I am also for supporting locally-owned Canadian companies and these guys fit that bill. I wouldn't even think of using anyone else.
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