About Baby Fetal Doppler Prodcuts Description
* FHR detection from 10-week pregnancy up to delivery.
* Menu option for accurately FHR detection from 30bpm to 240bpm in transient,average and manual calculating value with digital LCD display.
* Build-in speaker.
* Intellectual cancellation of erroneous FHR.]
* 16-chord alarming on FHR value over-limitation.
* Function on volume adjustment and button click sound.
* Three LR6 (AA) batteries, and three 1.2V rechargeable batteries used.
* Power selection of 4.5V and 3.6V by menu
* Auto power-off if there are no signals of FHR received within 2 minutes to save energy.
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