Feature:

1) Delicate and compact design, portable and easy to use

2) Crooked probe structure, which is easy to operate and increases the feeling of comfort, embodies the humanized design.

3) Three working mode: Real-time FHR Display Mode, Averaged FHR Display Mode and Manual Mode

4) FHR values, bar graph and heartbeat waveform color display

5) Alarming in red when the FHR value is out of the normal range.

6) Probe falls off detection, battery status indication

7) Automatic shutdown: The device will automatically turn off if there is no signal within 1 minute.

8) Audio interface: Can be connected to other recording devices by recording cable, record fetal heart sound in real-time

9) Two 1.5V batteries (AA LR6) can last more than 8 hours for normal use

Specification:

Ultrasonic emitting frequency 3.0Mhz±10%

Ultrasound output power 10mW/cm

DC power supply AA*2

Overall sensitivity at the distances 200mm from the face of the probe 92.4dB

Doppler frequency 500±50Hz

Target velocity 10cm/s~40cm/s

Spatial-peak temporal-peak acoustic pressure 20.1kPa

Effective area of the ultrasonic transducer active element 3.07cm2

The acoustic coupling medium for normal use ph: 5.5~8,

Acoustic impedance:≤1.7*105g /cm2·s

Working mode Continuous wave

Doppler Audio output power <0.5 W

Audio out Socket Φ2.5mm