Race walking foul display board: LED modules are used in race walking competitions of various sizes and grades. The LED module can manually set the red card information, and manually control the display. A single LED screen can display the red card information of up to 40 race walking athletes, and the number of athletes in the multi-LED screen display mode is not limited. The LED module can be connected with the race walking penalty system to automatically receive the data of the penalty system, and automatically/manually display it on the LED screen. Inspection display board: LED modules are used in various scales and grades of track and field games. The LED module can support various inspection time displays. The single-sided LED module displays the athlete's check-in timetable and check-in information. Long-distance track lap counting display board: LED modules are used for long-distance track and long-distance races in sports competitions of various scales and grades. The LED module uses colors to distinguish the lap status of each athlete, such as: retirement, laps, last lap, etc. The LED module is connected to a fully automatic lap counting device to display the remaining laps of each athlete in real time. Take-off foul monitoring display board: LED modules are used in field long jump events in sports competitions of various scales and grades. The LED module is connected to the take-off foul monitoring equipment to display the take-off video image. The LED module displays a static image of a take-off foul. .