MODE KEY - Changes display mode:
Hold down for 2 seconds to change
TOTAL-THIS/LAST PERIOD AVERAGE
Hold down for 2 seconds to change to SET mode.
Confirms the setting into memory and moves on to the next setting.
MODE & SET Key hold both for 2 secs to clear Total accumulated.
UP and DOWN arrows
In SET Mode used to change values up and down
In This Period mode
This Day, Last Day, This Week Last Week, This Month, Last Month
In Average Period mode
Day, Week, Month
(Calculated respectively from 30 day, 60 day and 90 day histories)