Sparton Corporation, together with its subsidiaries, provides electromechanical devices primarily in the United States. It operates in three segments: Medical Device, Complex Systems, and Defense and Security Systems. The Medical Device segment engages in the contract development, design, production, and distribution of complex and sophisticated medical related electromechanical devices for customers with specialized needs, primarily in the design and manufacturing process. This segment specializes in systems and procedures targeted to the requirements of medical Original equipment manufacturers and emerging technology customers primarily in the in vitro diagnostic and therapeutic device markets. The Complex Systems segment provides various industries with electronics systems and offers end-to-end development and manufacturing solutions; and assists in providing its customers with development of circuit card assemblies for integration into electro-mechanical solutions. This segment acts as a supplier for commercial and military aerospace applications, medical devices, telecommunications, energy, and industrial controls. Its portfolio of product line applications include flight controls, cock pit displays, fuel system controls, secure communications, early warning detection, diagnostics systems, security systems, detection systems, lighting, satellite communications, audio, nuclear detection, inventory control, and defense. The Defense and Security Systems segment designs and manufactures sonobuoys and anti-submarine warfare devices used by the United States navy and foreign governments; and develops and markets commercial products based on its navigation and underwater acoustic knowledge. The company also offers non-sonobuoy related manufacturing and services. Sparton Corporation was founded in 1900 and is headquartered in Schaumburg, Illinois.