RayTek MI Miniature Infrared Sensor - Manual (Page 44)

Operation
36 MI
6.3 Setting of Modes
You can easily determine the unit’s mode or parameter by doing the
following:
Press the <Mode> button until the
symbol for the actual set mode appears
in the display, e.g. <T> for setting the
transmission, see Table 5: Available
Modes, on page 37.
Use the <Down/Up> buttons until the
requested value comes into view.