AngelSounds JPD-200S Manual Del Usuario página 7

How to find the heart of the fetus
Apply a little gel to the probe (4) and place it on your stomach. Move it slowly,
trying to find the heart of the fetus. After finding the sound, continue to move
the probe slowly, looking for the place where the sound signal will be clearest.
The usual position of the fetus can be seen in the following picture. However,
the position of the fetus may vary depending on the stage of pregnancy and
other conditions.
Avoid using the device in an environment with a potential risk of explosion,
high or very low temperature or humidity, near an open flame. We
recommend that you do not use the device outdoors.
Always wipe off the gel from the device after monitoring.
Do not use the device if it shows signs of damage!
If you're cleaning your device, always keep it turned off.
Specifications
Dimensions: 100 mm × 85 mm × 50 mm ; 0.15 kg
Acoustic frequency: 3.0MHz±5%
Effective recording area: 7.4 cm2
Good operation: 4-6 hours
Battery: 9V
Water resistance: IP22
Terms of use: 5-40 °C
Safety
Warnings