Fetal Doppler – YK-90B Specification: Autocorrelation algorithm for high FHR accuracy Advanced digital signal processing(DSP) technical applied for real-time calculation of FHR High sensitivity wide beam integrated sensor for reliable detection throughout pregnancy Active noise reduction for crystal clear fetal heart sounds Advanced autocorrelation algorithm for high FHR accuracy Elegant and compact design, portable and convenient for home use Advanced power management for long battery life Low ultrasound power, safe to the fetus Automatically power-off in one minute without operation Signal quality indicator Volume controller
