ChoiceMMed MD300K2 Manuel D'instructions page 9

MD300K2
PULSE OXIMETER
9. Side UP/DOWN button: Press it for extended time to increase/decrease the brightness of
the backlight.
NOTE:
In the measuring interface, press the menu button for extended time, the alarm pause will be
turned on; press it again, the alarm pause will be turned off.
2.2 Power Supply
The device can be powered by 3 AA alkaline batteries.
Fig.2.2 Rear Panel
Batteries Installation:
1) Open the battery cover: Slide the fixing screw slightly in the rear panel to the position
which is marked with " " and then open the cover.
2) Batteries installation: Install 3 AA alkaline batteries or rechargeable batteries lightly as
indicated by the polarity signs.
3) Close the battery cover: Close the battery cover and slide the screw to the position. It
means that the battery cover is locked.
Battery life and replacement
When the battery voltage is lower, the battery indicator will become empty and its frame
shows in red, which means few of battery capacity remains. You should replace the batteries
with new ones in time.
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