Xylem CG 843P - Manual (Page 54)

Operation
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10 Change between °C and °F by pressing < ▲ > < ▼ > .
11 Confirm with <run/enter>.
The date flashes on the display .
Temperature unit
12 Set today’s date by pressing < ▲ > < ▼ >.
13 Confirm with <run/enter>.
The date (month) flashes on the display.
14 Set the current month by pressing < ▲ > < ▼ >.
15 Confirm with <run/enter>.
The year appears on the display.
16 Set the current year by pressing < ▲ > < ▼ >.
17 Confirm with <run/enter>.
The hours flash on the display.
18 Set the current time by pressing < ▲ > < ▼ >.
19 Confirm with <run/enter>.
The minutes flash on the screen.
Date and time