SR01-05 Heading Monitor Unit compares two Digital Heading Data inputs and generates an alarm if the difference exceeds the configured limit (the limit can be edited). It always transmits the selected heading input.

It Accepts NMEA, CourseBus, RGC11 and LR40 protocols

The unit has one Serial Data Alarm transmitting the NMEA “ALR” sentence.

SR01-05 can also be used as a heading protocol converter unit