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Security system and security alarm retailers sell the security systems and security alarms that people use to protect their homes and businesses against crime and fire. Some security system retailers and installers specialize in selling security systems and security alarms that are primarily used for home security while others specialize in commercial security systems. Security system retailers usually sell both wired- or wireless-security systems for homes and businesses. Some commercial security system retailers specialize in selling and installing advanced security systems like those seen in banks while other sell less intricate systems for homes and businesses. Many security systems sold by security system retailers include fire alarm systems. Most security system dealers and security alarm dealers install and maintain the systems they sell.
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