While under Pfingsten’s ownership, TSE was a global manufacturer of custom engineered interconnect solutions for the medical device, test and instrumentation, defense, and aerospace markets. Products included FDA approved custom cable assemblies for medical device products used in patient monitoring and critical care instruments, laboratory instruments, electro-surgical tools, neuro-muscular equipment, and imaging systems. The company sold its products to OEMs. TSE is headquartered in Arlington, Minnesota, and has additional facilities in Minnesota, Oregon, and Taiwan. Pfingsten sold its interest in the business in 2010.