AMC -UT M-400 Series User Manual page 60

When the ENTER button is pressed with the last digit highlighted, the confirmation screen
(described previously) is displayed. If Yes is selected, the edit value is persisted as the new value
for the Sim Gas concentration value. Otherwise, the edit value is rejected. In either case, the
menu returns to the Override sub-menu menu with the 'Sim Gas' menu item selected.
Selected 'Exit' from the 'Override' sub-menu returns the user to the sensor's service menu with
the 'Override' menu item selected.
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