Spectrum Control, Inc., together with its subsidiaries, engages in the design, development, manufacture, and sale of custom electronic components and systems. The company operates in four segments: Signal and Power Integrity Components; Microwave Components and Systems; Power Management Systems; and Sensors and Controls. The Signal and Power Integrity Components segment designs and manufactures a range of products, including low pass EMI filters, filtered arrays, filtered connectors, specialty ceramic products, commercial custom assemblies, multisection filters, power line filters, power entry modules, and power terminal blocks. The Microwave Components and Systems segment offers various radio frequency (RF) and microwave products, including RF and microwave amplifiers, RF and microwave mixers, voltage controlled oscillators, dielectric resonator oscillators, RF and microwave filters, and RF and microwave systems and assemblies. The Power Management Systems segment provides power distribution units, fuse and breaker interface panels, custom power outlet strips, and remote power management systems. The Sensors and Controls segment offers a range of precision position sensors, transducers, temperature sensors, thermal products, motorized potentiometers, fader and hollow shaft potentiometers, element segments, wiper assemblies, temperature sensing probes and assemblies, resistance temperature detector probes and assemblies, and positive and negative temperature coefficient thermistors. The company's products are primarily used in communications equipment, military/defense, medical equipment, industrial instrumentation, commercial aerospace, and automotive industries. It sells its products through manufacturers' representatives, internal sales force, and distributors. The company operates primarily in the United States, Mexico, China, and Germany. Spectrum Control, Inc. was founded in 1968 and is based in Fairview, Pennsylvania.