Fetal Doppler Bf-500a

Features of Fetal Doppler BF-500A:
Pocket Fetal Doppler mainly applies to detect the fetal heartbeat rate from the twelfth week;
LCD can display FHR, synchronous FHR signal, battery indicator, volume of sound and alarm indicator accurately;
Built-in rechargeable battery can work continuously more than 4 hours;
Modem inside can dial up and transmit FHR signal to the monitor center through telephone line to carry out remote monitoring;
Blue backlight LCD display for use conveniently at night;
Automatic power off ( one minute), self-detect function and alarm function when FHR is out of the normal range or battery power is in shortage;
Only 300g; can be carried conveniently with a gallus;
Built-in speaker and collocated with earphone jack;
2.0 MHz probe and easy to replace,optional 5.0MHz probe for blood stream.

Specifications:
Executive Standard: EN61266: 1995
Ultrasonic frequency: 2.0 MHzA 10%
Ultrasonic intensity: a 10mW/cm2
Comprehensive Sensitivity: a Y90dB
FHR range: 60--210bpm(A 2bpm)
FHR alarm range: a 100bpm or a Y160bpm
Isptp: a 0.1MPa
Battery: 9.6VNi-MH rechargeable batteries
Adapter input voltage: AC 110VA 10% 60Hz / 220VA 10% 50Hz
Rechargeable battery input voltagei no loadi : DC 12VA 1V
Maximum audio output intensity: a 0.5W
Doppler frequency: 100--3000Hz
Static continuous working time: a Y4h
Automatic Dormancy time limit:1 minute
Working temperature: 10-40a
Humidity: a 80%a
Atmospheric pressure: 86--106kPa