Melexis Microelectronic Integrated Systems NV is a mixed signal semiconductor manufacturer. Its products include hall effect or magnetic sensors (Triaxis brand), pressure & acceleration sensors (based on MEMS), wireless communication ICs (RF and RFID), actuators (for engine control and LIN bus systems) and optical sensors. Melexis' products are primarily used in automotive electronics systems, where they help to improve fuel efficiency, safety and comfort. Melexis also uses  it core competence  to supply ICs and sensors to consumer, medical and industrial markets. Melexis adopts a fabless model. It is headquartered in Ieper, Belgium and has other important facilities in Tessenderlo (Belgium), Sofia (Bulgaria) and Erfurt (Germany). In October 1997 Melexis had its IPO  on the  EASDAQ Stock exchange.