Mediamate series, Options, Hollingsworth - 1/8 in - 27 npt connector – Honeywell Switches and Sensors User Manual
Page 134: Hollingsworth - 3/8 in unf connector, Hirschmann - g-1/8 in bsp connector, Hirschmann - 1/8 in - 27 npt connector, Hirschmann - g-1/4 in bsp connector