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portable fetal doppler

Type:Doppler Ultrasound Equipment
Brand Name:JIAHUA
Model Number:JH-90A
Place of Origin:Jiangsu, China (Mainland)










CHANGSHAN90A   Fetal Doppler








Fetal doppler is designed to meet routine examination requirements for pregant women in hospitals and clinics 

or at home, it is a high performance model with FHR digital. The fetal doppler uses ultrasound technology to 

detect doppler sounds from the fetus as early as 16 weeks of pregnancy to the baby first moment of life. 




  • Advanced digital signal processing(DSP) technical applied for real-time calculation of FHR 
  • High sensitivity probe with 2.0 MHz in continuous wave 
  • Accurate and reliable FHR detection with clear sound 
  • Ergomomic design, portable and convenience 
  • Building-in rechargeable Li-ion battery and battery capacity indicator 
  • Date and time function 
  • Long time continuous use up to 4 hours 
  • Auto power off for energy savin 
  • Low ultrasound power, safe to the fetus 



Class II, Type B 


2.4" TFT display 

Power Supply 

Built-in rechargeable battery DC, working voltage:3.6V,Li-ion battery continuous 

operating time:>4 hoursAC recharger speaker power: 1WAuto shut-off; no signal, 

no pressing key operation, it will power off automatically after 1 minute 

Ultrasound transducer 

Working frequency:2.0MHz working mode: continuous/plused doppler effective 

ultrasound send/incept area:490mm2 Ultrasound strength:<=5 W/cm 2 total 

sensitivity:>=90 dB, at the distance 200mm to the surface of the probe, the target frequency is 140bpm 


Automatic FHR sound detection or speaking FHR 

Measurement range:50~210BPM of 2.0MHz 

Measurement accuracy: ± 1% or ± 1BPM 

Working environment 

Temperature: +5°C~+40 °C  


atomphetic pressure:86kPa~106kPa 




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Medical Equipment

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