The used Mychron 3 Kart Lap Timer with cables by AIM is a reliable and essential tool for go-kart enthusiasts looking to accurately track their lap times. With the trusted brand name of AIM, you can be assured of quality and precision in this lap timer. Perfect for car tuning and styling, this device helps drivers enhance their performance on the track by providing real-time lap timing data. Whether you are a beginner or a seasoned racer, this lap timer is a valuable addition to any karting setup.

See pics for details. It seems to work all fine. Also tried the sensor with a magnet and it responds so all good. It came from a bundle I bought and it is surplus to requirements