Household Fetal Doppler Baby Prenatal Heart LCD Display Fetus-voice Meter Pregnant Woman Daily Care Product

Description

This is a quality fetal detection instrument that uses Doppler prince to obtain fetal from the pregnant woman's abdomen, and presents fetal data through voice ing, digital display and other ways. You can use it to hear fetal heart sound and calculate FHR to achieve pre-ing and fetus caring. Note: The normal fetal r-ange is 120-160bpm. 100-120bpm and 160-180bpm are critical intervals, which should be paid attention to. The value below 100bpm and above 180bpm should be high concerned. Specifications: Name: Fetus-voice Meter Material: ABS Color: white Battery: 2 * AA battery (not included) Earphone: 3.5mm 32 Mono -or dual-channel headphones Ultrasonic-operating frequency: 2.5MHz 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 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: 5°C-40℃ Relative humidity : 25-80% RH Atmospheric pressure: 70kPa-106kPa2 Storage and transportation: Temperature: 5℃-45℃ Relative humidity: 9-85% RH Atmospheric pressure: 50kPa-106kPa Viscosity: >15Pa.S PH value: 5.5-8 Service altitude <2000m Package size: 170 * 115 * 50mm / 6.69 * 4.53 * 1.97in Package weight: 160g / 5.64ounce Packing List: 1 * Fetal Doppler 1 * Guideline