The Air-Fuel Ratio (AFR) 200 Series and the Ignition Control Module (ICM) 200 Series controllers are part of GAC’s comprehensive Fuel and Ignition Management System (FIMS) for gaseous-fueled, spark-ignited engines. The AFR200 performs closed-loop air-fuel ratio control using an exhaust oxygen sensor for feedback, in addition to providing a built-in engine speed governor with GAC’s proprietary EDGe algorithm. Easy to configure, simple to install, and built for the extreme environments of industrial engines; GAC’s AFR200 series delivers.