ChoiceMMed MD300K, Instruction Manual, Page: 11 / 30

VER.1.3
PULSE OXIMETER OPERATOR＇ S MANUAL
9
3 Install the batteries and the sensor
3.1 Install the batteries as the following pictures:
1 ） Open the battery cover: Rotate the fixing screw slightly in the rear
panel to the upright position which is marked with “ ” and then open
the cover with nail.
Fig.3
2) Install two batteries lightly as indicated by the polarity sign:(refer to
Picture 4 ）
Note:
Make sure the polarity of the batteries is correct
3) Close battery cover
Close the battery cover and rotate the screw to the
position. And the
battery is locked.
Make sure that the polarity of the batteries is correct.
Otherwise the unit cannot operate normally.
Battery life and replacement
When the low power indication light please replace the batteries with
new ones timely.
— Always turn the unit off before replacing the batteries.
— Dispose of the used batteries according to the applicable local
regulations.
Fig. 4