LEM produces components for power electronics. Its core products are transducers for measuring electrical parameters like current and voltage. LEM's transducers are used in applications such as railway, motor drives, power supplies, AC/DC converters and wind and solar power generation. The products provide more control, more reliable energy and better energy efficiency. LEM reports two business segments: The Industry segment includes the businesses Drives, Renewable energy, Traction and High precision. In the Automotive segment, it develops solutions for battery management and electrical motor controls for green and conventional cars. Liaisons Electroniques-Mecaniques LEM SA was founded in 1972.