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Just a couple of a long time ago, a hearth home security system was considered an extra and it was generally seen only in affluent neighborhoods. But times have changed since that time. Now, a competent fire alarm system not merely adds value on your property. It protects your own home from fire and may even present you with and your family security from intruders. Just how do fire security alarms work? Basically, fire security systems detect the appearance of fire at home, and alert you prior to fire spreads. But exactl