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Features:
Portable Fetal Doppler mainly applies to detect the fetal heartbeat rate from the twelfth week.

Built-in rechargeable battery can work continuously more than 6 hours,LED can display FHR;

Alarm function when FHR is out of the normal range or battery power is in shortage;

Built-in speaker and collocated with earphone jack;

2.0MHz probe,Optional 5.0MHz probe for blood stream.

Specifications:
Executive Standard: EN61266: 1995

Ultrasonic frequency: 2.0MHz±10%

Ultrasonic intensity: ≤10mW/cm2

Comprehensive Sensitivity: ≥90dB

FHR range: 60-210bpm(±2bpm)

FHR alarm range: ≤100bpm  or  ≥170bpm

Isptp: ≤0.1MPa

Battery: 14.4V/1600mAh Ni-MH rechargeable batteries

Adapter input voltage: AC 110V±10% 60Hz / 220V±10% 50Hz

Rechargeable battery input voltage（no load）: DC 24V±1V

Maximum audio output intensity: ≤2W

Doppler frequency: 100--3000Hz

Static continuous working time: ≥6h

Working temperature: 10-40℃

Humidity: ≤80%

Atmospheric pressure: 86--106kPa