Joycare JC-238 Manual Del Usuario página 11

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To delete the temperature and maximum humidity data first press the
"min/max" button, "MAX" appears on the display above the temperature
info, then press the "clear" button. Two horizontal lines " - -" are shown
on the display next to the humidity and temperature percentages
to indicate that the saved data has been deleted. Repeat the same
procedure to delete the temperature and minimum humidity data. "MIN".
ATTENTION: The product comes with two battery monitors, but the
product is powered and works perfectly well with a single 1.5v AAA
battery. See image below, the second battery included should be treated
as a spare.
The batteries provided are also exclusively to evaluate how the unit
works and may therefore have a shorter lifespan. Replace the battery
when it is depleted.
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