Argyle Security, Inc., a detention and commercial security provider, engages in designing and integrating electronic security solutions in the United States. It operates through ISI, MCS, PDI, Com-Tec, and MCS Fire & Security business units. The ISI business unit designs, engineers, supplies, installs, and maintains an array of detention systems and equipment that include detention hardware, such as prison bars, locks, and locking systems; security glass; security furniture comprising metal furniture; detention grade hollow metal doors; frames; and windows and related accessories. Its customers include general contractors and governmental or private entities. The MCS business unit is involved in the design, engineering, supply, installation, and maintenance of complex electronic security systems for correctional facilities. This business unit provides access and door controls, intercoms, closed circuit television, and software for command center controls and intrusion perimeter systems primarily to the general contractors. The PDI business unit manufactures high security metal barriers, high security observation window systems, wire mesh, bar grating, detention furniture, and accessories. The Com-Tec business unit designs electronic security and communications systems and provides touch screen controls, UL 508A control panels, door and gate controls, closed circuit televisions, intercom and paging, security management, access control, and perimeter intrusion detection systems. The MCS Fire & Security business unit designs, engineers, supplies, installs, and maintains professional security, access control, video and fire alarm, closed circuit television, sound paging systems, and structured cabling primarily for petro-chemical, healthcare, utilities, and education customers. The company was formerly known as Argyle Security Acquisition Corporation. Argyle Security, Inc. was founded in 2005 and is headquartered in San Antonio, Texas.