Sentry Security

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Mueller Management Company is a multi-faceted security operation that manages the daily operations of ACF Alarm Company, St. Louis Alarm Monitoring and Sentry Security Agency, Inc. The company was established in 1969 by John R. (Dick) Mueller, who is a retired St. Louis Police Detective. Throughout the ensuing years the company has continued to expand and provide sophisticated services in all areas of security. During the thirty-five years since the founding of Mueller Management Company the company has expanded and grown successfully into the largest security operation of it's kind in the greater St. Louis Metro area. Throughout these growth years we have continually implemented ways to provide innovative and hi-tech services to remain on the cutting edge of security needs. Sentry Security Agency, Inc is a full service security company. Sentry provides guard and police services to many local and national companies. Sentry also offers patrol, alarm response, alarm verifica tion, investigation, surveillance and electronic supervision. ACF Alarm Company is a full service alarm installation and alarm repair company offering home and commercial security alarm systems, burglar alarm systems, fire alarm systems, closed circuit television, alarm verification, door access systems, remote video monitoring over the internet, and digital video recorders (tapeless).