The OLRx User is an infra-red optical beacon receiver used in combination with the OLTx IR binary coded sequence transmitters. The OLRx User triggers a 5 V pulse only when the received matching team-code is recognised. This IR beacon receiver is compatible with most of the Magneti Marelli data loggers, dashboards and ECUs, for which the end-of-lap reference is of the outmost importance. An indicator LED on the back end of the receiver lights and flashing during normal operation.