Universal Mychron Infrared Receiver for Models 3, 4, and 5Beacons light the way to precise timingthe Mychron Infrared Receiver makes it happen for 3, 4, and 5 gauges. In venues without sky view, it detects IR signals from loop transmitters, logging splits as faithfully as GPS, ensuring your data reflects true performance. Broad compatibility: Works across Mychron 3, 4, 5 for versatile use. Indoor optimized: Excels in arenas, cutting out satellite dropouts. Quick mount: Adhesive or clip options for secure