Rcexl CDI Tester Electronic Ignition Igniter Test for Gas Engine

- Supported engines: single cylinder, twin-cylinder, V cylinder, star multi-cylinder (3, 5, 7, 9) engines

- Operation guide: Plug the sensor of your CDI into the respective port (single-cylinder and twin-cylinder to the 3-pin port, other types to the 4-pin port), then press the SELECT button to change the engine type. Adjust the RPM knob can change the ignition frequency.