ON / OFF
CAL
HOLD /
ENTER
▲
▼
MODE
Powers on and shuts off the meter.
Takes you directly into measurement
mode when meter is switched on.
Enters into calibration mode %
saturation and Temperature.
To abort calibration or setup mode
without confirming any set value.
HOLD: Freezes reading. Press HOLD
to freeze, press hold again to release.
ENTER: To confirm values in
calibration mode and selections in
SETUP mode.
In Calibration Mode: Press to scroll
through calibration values.
In Setup Mode: Press to scroll
through the setup sub-group programs.
Selects measurement mode for
DO%, DO and Temperature.
When pressed together with ON/OFF
key, it will take you into the SETUP
mode. This allows you to customise
the meter preferences.