The AFR-64R controls rich-burn, natural gas-fueled engines – maximizing the efficiency of a three-way catalyst by maintaining the proper air-fuel ratio over varying engine loads, speeds, fuel quality, ambient temperatures and barometric pressures. And the AFR-64R works without operator intervention. Easy to install, even easier to use, and equipped with a comprehensive 44-fault on-board diagnostics and troubleshooting system, the Windows-based AFR-64R redefines the state-of-the-art – in hardware, microprocessor power, control system software, operator interface options, adaptability to variable engine conditions, software upgradeability, you name it.