How do fetal dopplers work?

Handheld fetal dopplers are easy to use and understand. A fetal doppler is used to listen to a baby’s heartbeat while it is still in the womb.

By using ultrasound technology, a fetal doppler heartbeat monitor sends high frequency sound waves into your abdomen.

When the sound waves encounters your baby’s heartbeat, it sends a signal back to the device through the handheld probe. The signal is then translated into a sound which is then amplified so you can hear it.