3MHz Pocket Fetal Doppler Prenatal Heart Monitor digital Curve Vascular Doppler

Instructions:
Pocket Fetal Doppler is a hand-held obstetrical unit, which can be used in hospital, clinic and home for daily self-check by pregnant woman. The fetal doppler is equipped with a full high definition color LCD display.
Features:
The units are compact,ligghtweight,easy operating,with stable performance and high dependability.
Easy-to-use,the probe can be changed
Accurate FHR detection with clear sound
High sensitivity interchangeable probe
Battery status indicator
2 display Interface : Digital display interface, Curve display interface
High accuracy, curve display interface, can see the fetal movement curve.
Specification:
Standard: EN61266:1995
Safety Classification: BF /Class Ⅱ /Internal power
Overall Sensitivity: ≥ 90 dB (Integrated sensitivity 200mm away from the surface of the probe)
Measuring integrated sensitivity
The Doppler frequency :(300 ± 50) Hz
Reflecting target speed:10cm / s ~40cm / s
Ultrasound transducer’s effective area: 6.0±0.5cm2.
Target velocity and display range : No narrower than 50bpm-240bpm (± 2bpm). (Beat Per Minute)
(Notes: Please go to see a doctor once the FHR is abnormal) Output power: ≤10Mw/cm2
EMC testing data (See annex Ⅱ)
Working frequency:3.0 MHz ± 10%
Spatial-peak temp-peak acoustic pressure:≤ 0.1 MPa. Effective area of transducer:6.0±0.5 cm2
Physical Characteristic:
Working environment: Temperature: +5 ℃ ~ +40 ℃
Humidity: ≤ 80% Atmospheric pressure: 86kPa ~ 106kPa
Transport and storage environment:
Atmospheric pressure: 86kPa ~ 106kPa,well-ventilated room without corrosive gases.
Battery: Two pieces of 1.5V battery(not include)
Size: 135mm (Length) x65mm (Width) x30 (Height) mm
Weight: 170g(without batteries)
Probe:
Working Frequency:3.0MHz
P-: ≤1MPa
Iob≤20mW/cm2
Ispta≤100mW/cm2
Packing Include:
1 x Color LCD Fetal Doppler
1 x English User's manual