Fetal Doppler Baby Heart Rate Monitor

Feature

1. Working frequency: 2.0 MHz +/- 10% 
2. Ultrasonic output power: Iob=<10 mW/cm2 
3. Overall Sensitivity: >= 90 dB (Integrated sensitivity 200mm away from the the surface of the probe). 
4. While measuring integrated sensitivity, using the Doppler frequency (300 +/- 50)Hz. 
5. Reflecting target speed: 10cm /s ~ 40cm /s. 
6. FHR measuring range: No narrower than 50bpm-240bpm (+/- 2bpm). (Beat Per Minute) 
7. FHR Accuracy: +/- 2 BPM 
8. Spatial-peak temp-peak acoustic pressure: =< 0.1 MPa. 
9. Negative Peak Sound Pressure: (p_)<1Mpa. 
10. Output Beam Intensity: (Iob)<20mW/cm2. 
11. Spatial-peak temporal-average derived Intensity: (Ispta)<100mW/cm2. 
12. Continuous working time: >= 5h (Low battery capacity or large volume may reduce working hours). 
13. Coupling gel acoustic impedance:1.5 ~1.6 (105g/cm2.s). 
14. Audio output power: =<1.0W 
15. Battery type recommended: Two pieces of 1.5 V DC battery (SIZE AA LR6), not included. 
16. Working environment: Temperatrue: +5 degree C ~ +40 degree C, Humidity: =< 80% 

17. Atmospheric pressure: 86kPa ~ 106kPa. 
18. Transport and storage environment: Temperatrue: -10 degree C ~+40 degree C, Humidity: =< 80%. 
19. Atmospheric pressure: 86kPa ~ 106kPa, well-ventilated room without corrosive gases.

One Package Weight 0.25kgs / 0.54lb
Qty per Carton 40
Carton Weight 10.20kgs / 22.49lb
Carton Size 50cm * 32cm * 27cm / 19.69inch * 12.6inch * 10.63inch