Since 1972, LEM USA has developed more than 2,000 customer-specific transducers. LEM is the North American subsidiary of LEM Holding S.A. Geneva, Switzerland. The company is a specialist producer of current sensors and voltage transducer products with complete manufacturing, testing and engineering capabilities to serve current and voltage needs. LEM has a full line of current and voltage transducers for a variety of industrial and traction applications, including variable speed drives, welding, uninterruptible power supply and power converters and electric vehicles and trains. The transducers have nominal ratings from five to 10,000 amps. LEM also offers custom clamp-on current probes. Safety testers, power analyzers and chart recorders are included in its instrumentation offering. LEM is located in Milwaukee.