Sonotrax Lite is for simple auscultation (intermittent listening). Sonotrax Basic is a high performance model with FHR digital LCD display. Sonotrax Pro has backlight and audio playback.

Sonotrax Pro has backlight and audio playback. All these models have audio output, which can be connected with earphone or recorder. As well,the unit can be operated with 4MHz or 8MHz probe for ...

Your healthcare provider will check your baby's heart rate with a fetal Doppler (a handheld ultrasound monitor) at each prenatal visit after about 12 weeks. "We use Doppler in the clinic to detect ...