China Water-Proof Fetal Doppler Bluetooth Earphone

Doppler Fetal Heart Rate (FHR) Detector model BF-515 applies the ultrasonic Doppler principle to detect the fetal heart beat. The units are compact, lightweight, easy to operate with stable performance and high dependability.
² Delicate, handle, probe integrated with main unit, pulse working mode, and built-in loudspeaker
² Water-proof design, work under the water, and specially designed for water delivery.
² Bluetooth function, FHR data can be transfered to PC with WiFi. There is the lock function for fetal heart rate.
² Three working modes: Instantaneous count mode, average count mode and manual count mode.
² Blue backlight LCD displays fetal heart rate and other information such as low power indicator and alarm indicator for abnormal FHR etc.
² Excellent power management function: The backlight will power off after 10 seconds without signal input.
² Adopt DSP technology which is the same with fetal monitor, to make sure accurate and stable fetal heart rate detection.
Specifications:
L Standard: EN61266: 2005
L Safety Classification: BF /Class II /Internal Power
L Working mode: Pulse Doppler
L Ultrasonic Frequency: 2.0 MHz; 3 MHz ( ± 10% )
L Overall sensitivity: ≥ 90 dB (Integrated
Sensitivity 200mm away from the the surface of the probe)
L While measuring integrated sensitivity, it uses the
Doppler frequency (300 ± 50) Hz, reflecting target speed is 10cm / s ~ 40cm / s
Target velocity and display range: 3 0 bpm-2 4 0 bpm
L Spatial-peak temp-peak acoustic pressure: ≤ 0.1 MPa.
Effective area of transducer: 3.0± 0.5 cm2
L Battery: Alkaline batteries(1.5V * 4 PCS) ( dry battery)
Power consumption: ≤ 2VA
L Coupling medium impedance: 1.5-1.6 (105g/cm2. S)
L Doppler frequency: 0-3.0 kHz
Speaker Power: 1W
Physical characteristics:
Size: 190 * 68 * 45 mm
Weight: 350g± 20g (including battery )
Humidity: ≤ 80%
Atmospheric pressure: 86kPa ~ 106kPa
Humidity: ≤ 80%
Atmospheric pressure: 86kPa ~ 106kPa, well-ventilated room without corrosive gases.
LAcoustic output parameters meet the national exempted conditions released that the ultrasonic and main unit in all operated mode can meet the following requirements:
A) The peak negative acoustic pressure
(p_) < 1Mpa;
B) The output beam of sound intensity
(lob) < 20mW/cm2;
C) Spatial peak time average educed the sound intensity (lspta) < 100mW/cm2.
Standard configuration: Main unit, 1.5V*4 PCS alkaline battery, gallus, manual, warranty card and quality certificate