GARMIN Pn. 494-50005-01 / UMA Pn. T1A9-2, Magneto bleed port RPM sensor.
This TSO’d HALL Effect RPM sensor (0-3500RPM) for Bendix Magnetos is vented allowing use with pressurized magnetos. The unit comes with an Instruction sheet.
The jacketed shielded 6 foot cable has 3 wires.
Hall Effect Tach sender.
made by UMA instruments, T1A9-1