Press switch button
, the device will turn on and self check, then the
Blue Indicator light will light. when the FHR display "000", the self-check is
finished and get into use.
2.
Detect FHR
Put the gel on the surface of the ultrasonic probe, then press the probe on
the detect position softly and ensure it has a good touch surface. When the
probe is on the right position, you can hear the fetal heart beat rate (FHR).
Wait until the sound is clear and consecutive seconds later, the LCD screen
will display the right FHR.
3.
Volume Control
Under the FHR display state, you can control the volume by "
" or "
" button louder or down.
4.
Turn off
After detecting, please press the switch button
, the device will power
off, the blue Indicator light also closed.
5.3 Detecting
Locate the position of the fetus by hand touching, firstly to find out the best
direction to the fetal heart. Place the faceplate of probe at the best position
for detecting fetal heartbeat. Adjust the probe to obtain an optimum audio
signal ideally by angling the probe around. Generally, the site of heart of
fetus is 1/3 below of navel line at its earlier stage, it then moves upward with
increasing of gestational period, and the site of heart of fetus will be a little
