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ULTRASOUND DOPPLER FETAL HEART RATE MONITOR
- Very portable: 12.9*9*23cm
- Measuring range:50-210bpm
- Measuring accuracy: ±2bpm
- Resolution:1bpm
- Working frequency: 3MHz ±15%
- Space peak time, peak sound pressure:<0.1MPa
- Output ultrasound power:<20mW
- Powered by two 1.5V AAA batteries
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