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Mini Doppler, Detect and Display Fetal Heart Rate FD500 for Home Use
$56.98
Merconn Doppler Detect is intended to detect and display fetal heart rate.
It is a hand-held, battery powered audio Doppler device used for detecting fetal heart beats and sounds
It has two hand-held components, a main unit and a probe.
The ultrasonic signal is continuously transmitted at a frequency of 2.0 MHz.
Powered by two AA batteries