Central District Alarm (CDA) is a leading security company based in Ellisville, MO, offering a wide range of residential and commercial security services. With over 70 years of experience, CDA is a family-owned and operated business that prides itself on providing professional and customized security solutions tailored to meet the specific needs of each client.
As the largest privately owned security company in St. Louis, CDA offers 24/7 service and operates a UL-listed Central Station for monitoring systems. Their team of experienced representatives works closely with customers to design and implement security systems that provide the highest level of protection, utilizing state-of-the-art technology such as closed circuit televisions and intrasonic technology.
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