1. Pocket Fetal Doppler mainly applies to detect the fetal heartbeat rate from the twelfth week;
2. Built-in rechargeable battery can work continuously more than 5 hours;
3. Only 220g, can be carried conveniently with a gallus;
4. Alarm function when FHR is out of the normal range or battery power is in shortage;
5. Built-in speaker and collocated with earphone jack;
Specification
1. Executive Standard: EN61266: 1995
2. Ultrasonic frequency: 2.5MHz±10%
3. Ultrasonic intensity: ≤10mW/cm2
4. Comprehensive Sensitivity: ≥90dB
5. FHR range: 60-210bpm(±2bpm)
6. FHR alarm range: ≤100bpm or ≥160bpm
7. Isptp: ≤0.1MPa
8. Battery: 9.6VNi-MH rechargeable batteries
9. Adapter input voltage: AC 110V±10% 60Hz or 220V±10% 50Hz
10. Rechargeable battery input voltage(no load): DC 12V±1V
11. Maximum audio output intensity: ≤1W
12. Doppler frequency: 100--3000Hz
13. Static continuous working time: ≥5h
14. Working temperature: 10-40℃
15. Humidity: ≤80%
16. Atmospheric pressure: 86--106kPa