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Features
All-in-one design for probe and mainframe.
Legerity, beautiful appearance and portalbe;
The indicator light will flash every six seconds to provide pregnant women with counting convenience.
Inside 3.7V chargeable lithium battery provided, the volume is enough for 5-hour detection work;
Standard battery charger provided;
When the device is under operating mode for one hour without any operation, the device will be shut off automatically to ensure the useful time of the device.
Specifications
FHR Performance
FHR Measuring Range: 30BPM~240BPM (BPM/minute)
Resolution: 1BPM
Accuracy: ±1%
Ultrasound
Working Frequency: 2.0MHz±5%
Total Sensitivity : under distances of 50mm,75mm,100mm and 200mm, the total sensitivity value is ≥90dB.
The valid area on sensitivity unit of Ultrasound transducer: 398±2mm2.
Coupling medium impedance≤1.7x105g/cm2•s
Spatial-peak temporal-peak acoustic pressure≤0. 1Mpa
Out power≤5mW
P—:<0.35MPa
Iob<5mW/ cm2 ;
Ispta<100mW/cm2
Working Principle: Continual wave
Working Voltage: 3.7V
Headset Specifications:
Plug:Φ3.5mm
Frequency range:100-16000KHz
Sensitivity:(1KHz,1Vrms)>100dB
Impedance:32-64 Ohm
Total harmonic distortion:<1 %,
Input power: >10mW.
Battery charging:
Battery specification: 3.7V/450mAh, Lithium Battery
Charger Specification: Input 100V~ 240V, Output 5V/500mA
Charging time: <2 hours
Use of time: >5 hours
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