Product Guideline of Yonker Portable Ultrasound Fetal Doppler YK-90B 

Yonker Portable Ultrasound Fetal Doppler YK-90B is a noninvasive test that can be used to measure the blood flow through your blood vessels. It works by bouncing high-frequency sound waves off red blood cells that are circulating in the bloodstream. A Doppler Fetal ultrasound uses sound waves to produce Baby Heartbeat, but can’t show blood flow.

Specifications of Yonker Portable Ultrasound Fetal Doppler YK-90B

Model Number : YK-90B   
Brand Name : YONKER 
Origin : China  
Material : Plastic 
Color : Blue/Pink/Purple/Green 
Display : FHR 
Ultrasonic operating frequency : 2.5MHz
Measurement precision : Error not more than 2 times/min
FHR Measurement Range : 50-240 bpm
Accuracy : ±2 bpm
Ultrasonic output power : < 40mW
Operating mode : continuous wave
Integrated sensitivity : At the place 200mm away from the surface of probe: >90dB
Size : 3.78*1.11*5.04 in
Weight : 135.5 g (including battery).

Features of Yonker Portable Ultrasound Fetal Doppler YK-90B

• Autocorrelation algorithm for high FHR accuracy
• Advanced digital signal processing(DSP) technical applied for real-time calculation of FHR
• High sensitivity wide beam integrated sensor for reliable detection throughout  pregnancy
• Active noise reduction for crystal clear fetal heart sounds
• Advanced autocorrelation algorithm for high FHR accuracy
• Elegant and compact design, portable and convenient for home use
• Advanced power management for long battery life
• Low ultrasound power, safe to the fetus
• Automatically power-off in one minute without operation
• Signal quality indicator
• Volume controller

Benefits of Yonker Portable Ultrasound Fetal Doppler YK-90B

• Pea-shaped exterior design | Split body design | Separate design of the main unit and the probe
• The high-sensitivity ultrasound probe can obtain a larger focal area, making it more accurate to find the fetal heart position.
• The built-in speaker plays fetal heart sounds and actively reduces noise.
• The fetal heart sounds are loud and clear, and the volume can be adjusted.
• Ultra-low-intensity ultrasound output with high safety quality.