AngelSounds JPD-100S (mini) Instrucciones página 150

NOTE： You should push the battery cover backward like the figure
upward.
Then you can open the battery cover.
Battery type: Alkaline battery 9V
CAUTION:
Remove the battery if the device is not likely to be used for
some time. And keep the battery in cool and dry environment.
WARNING: Irregular treatment of batteries may be result in
hazards to health and environment.
5.1.2 Connect headset
Before you practice the product, you should prepare an
earphone or a headset to hear the fetal heartbeat sound.
We will give you a headset as a present. It can help you to
hear the fetal heartbeat sound when you have not bought an
earphone.
Insert the headset-plug into headset socket, and wire the
handset.
5.1.3 Power on by turning the Power on/off and volume knob
5.1.4 Remove clothes from the pregnant maternal abdomen.
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