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ESi Companies, Inc. is America's leading detention contractor, consulting prisons, jails and courthouses since 1981 when the company was incorporated in the State of Tennessee. ESi has also developed a line of state-of-the-art electronic products including Biometric Verification Systems, Video Visitation and Arraignment Systems, Graphic Control Panels, Touchscreen Control Systems, Fieldbus Distribution I/O Systems, Video Network Recording Systems, and Optic Video Systems, in addition to a line of Perimeter Security Systems.

ESi Companies, Inc. has extensive experience in design-build construction, fast-track construction, facilities renovations, and maintenance of both private and government-owned and operated correctional facilities. The company manufactures a line of graphic control panels, power supply products, intercom products, biometric verification products and other electronic and hardware products designed to meet the rigorous standards required for detention and correctional facilities.

From concept to completion, ESi Companies, Inc. prides itself in designing, manufacturing, and installing quality integrated security systems to address security needs in the 21st Century.