Download RoadRelay 

RoadRelay 5 or 4 software calibration is accessible for download in a zip file. For RoadRelay 4, the calibration tool install program sets up the correct COM port, data link, and protocol so that a RoadRelay 4 software calibration can be downloaded to RoadRelay 4. 

RoadRelay 5
RoadRelay 4 "A"
RoadRelay 4 "E"

*RoadRelay 4 "A" is the standard calibration for RoadRelay 4 and works with all models, while the "E" extended memory calibration is for Portuguese and Italian language support and will work only on 40059XX models