Fetal Doppler Detector Baby Heart Beat Rate Probe Prenatal Monitor Ultrasonic P3.

Specifications:

Name: Fetus-voice Meter

Material: ABS

Color: white

Battery: 2x AA battery (not included)

Earphone: 3.5mm 32 Mono -or dual-channel headphones

Ultrasonic-operating frequency: 3.0MHz

The deviation between the ultrasonic-working frequency and the nominal ultrasonic-working frequency: should not be more than 15%

Overall sensitivity: 290dB (At a distance of 200mm from the probe surface, the comprehensive sensitivity)

Fetal heart rate measurement and display-range: should not be less than 65-210BPM

The speed of sound: 1520- 1620m/s

Acoustic impedance: 1.5- 1.7 x 106 Pa.s/m

Acoustic attenuation : < 0.05dB/(cm.MHz)

Working environment:

Temperature: 5C-40

Relative humidity : 25-80% RH

Atmospheric pressure: 70kPa-106kPa2

Storage and transportation:

Temperature: 545

Relative humidity: 9-85% RH

Atmospheric pressure: 50kPa-106kPa

Viscosity: >15Pa.S

PH value: 5.5-8

Service altitude <2000m

Package weight: 160g / 5.64ounce

Packing List:

1x Fetal Doppler(without box)