Futaba SBS-01RM Magnetic RPM Telemetry Sensor (FASSTest/T-FHSS) SBS-01RM
A magnetic RPM sensor with a range from 360 to 50,000 RPM to suit Futaba FASSTest receivers.
To install this correctly you will need to purchase either a 30-Size mount (Y-1M15Q00202) or a 60-Size mount (Y-1M15Q00301).
Click Here for the Manual: