Fetal Dopplers

There is no more remarkable feat than being a parent. While the journey has its ups and downs, giving birth to your child is a monumental achievement. Capture these magical moments with our fetal dopplers, which allow you to hear and share your child's movements inside the womb.

Using ultrasound technology, fetal dopplers allow you to monitor and hear your child's heartbeat. It is also sensitive enough to pick up even the slightest sounds. 

Create an instant parental bond with your child by monitoring every single precious second. Caremax's range of fetal dopplers is the perfect gift or accessory for every pregnant mother.

What is a Fetal Doppler?

"Childbirth is more admirable than conquest, more amazing than self-defense, and courageous as either one." American journalist Gloria Steinem's quote perfectly encapsulates the beauty of motherhood. In Australia alone, around 800 newborns are given life daily [1]. As a result, the sound of a new heartbeat echoes every minute that passes. 

But, what if you could hear your child's heart, even before delivery? Even better - without even leaving from the comfort of your own home? 

Caremax introduces our fetal dopplers products which safely help parents connect with their child even before birth. Using sound waves, these machines help measure and monitor your baby's heart rate inside the womb. 

Read this article to see how fetal dopplers help keep you updated about the health of your almost newborn.

Everything to Know About Our Fetal Dopplers

Monitoring your child has never been easier. Caremax's range of fetal dopplers is a wonderful addition to any expecting mother's journey. After 12-14 weeks of pregnancy, you can start to capture the very first moments of your baby inside your belly. Using the included cable, you can even share these recordings with your loved ones by sending them through email, phone and other platforms. 

Not only can you hear the heartbeat, but Caremax's dopplers is also equipped with a full-definition monitor to measure your child's heart. Receive real-time feedback about your baby's heart rate in an instant. Additionally, you'll be able to hear every single little movement, ranging from kicks, thuds and even hiccups, through the in-built speakers. 

All of Caremax's fetal dopplers are 2.5mHz and 3.0mHz, which are ideal for listening to your baby throughout the whole duration of the pregnancy. Additionally, the ultrasound waves emit no radiation, which makes them safe for your baby when used correctly. 




How do fetal dopplers work?

Fetal dopplers can detect a fetus's heart rate. Medical professionals use this information to assess your child's health and wellbeing. Capturing your child's first heartbeats is a precious parental experience. 

Fetal dopplers pick up the heart beating by using ultrasound waves. These high-frequency sound waves are delivered through a part of the doppler called a transducer. Afterwards, the sound waves bounce back from the structures (e.g. heart, blood vessels) and are picked up by the machine.

Parents and those present may be able to hear the baby's heartbeat when used correctly.


What is the best fetal doppler?

Fetal dopplers are manufactured with different levels of frequencies or power levels. Typically, they range anywhere between 2mHz to 8mHz [2]. Each frequency level is ideal for specific purposes. 

For example, a 2mHz fetal doppler probe would be more suited for detecting the baby's heart rate in larger women and later pregnancy stages. It is also the preferred probe during labour or delivery.

Most health professionals (e.g. obstetricians, midwives, etc.) will use a 2.5-3mHz fetal doppler probe to monitor the baby throughout the pregnancy. It is more sensitive and can detect the baby's heart rate earlier than the 2mHz probe.

As a result, the 2.5-3mHz fetal dopplers will be the most appropriate for most pregnant women. All of Caremax's fetal dopplers range between these frequencies, and you can view them here.


Can fetal dopplers harm the baby?

Fetal dopplers use ultrasound to help monitor and detect your baby's heart rate. Ultrasounds are high-frequency sound waves with no ionising radiation, unlike other diagnostic tools, such as x-rays or CT scans [3]. As a result, fetal dopplers are one of the safest ways to monitor your child. 

Currently, no research shows that fetal dopplers can harm the baby. Additionally, even less evidence has assessed the safety of the home version. 

As most mothers would know, direct heat onto the womb should be avoided as it can negatively affect both the mother and child. Items such as heat bags and heat creams should always be safely used as instructed, identical to home fetal dopplers. Avoid prolonged and always be guided by the instructions. 

Caremax's fetal dopplers have features such as 1-minute auto-off and lower ultrasonic power standards to maximise safety. 


When should you use a fetal doppler?

You may need to wait for a certain period to effectively pick up your baby's signals on the fetal doppler. Most of Caremax's fetal dopplers should be able to detect signals as early as 14 weeks. 


Is a fetal doppler the same as an ultrasound?

The terms' ultrasound' and 'fetal doppler' are often confused. 

To clarify, ultrasounds are powerful sound waves that help detect what is happening inside the body [4]. Fetal dopplers are machines that use ultrasounds to monitor the baby's heart rate. 

However, different types of machines also use ultrasound to help assess the body. Regular ultrasound machines use sound waves to recreate the structures inside the body [4]. On the other hand, doppler ultrasounds measure the sound waves that bounce back from the moving parts inside the body. 


How do you use a fetal doppler?

Before using your fetal doppler, set up your devices as outlined by the instructions. Make sure to place your AA alkaline batteries inside the doppler. 

When ready, make sure to lie on your back in a comfortable position. Expose the abdomen and apply ultrasound gel over the area you would like to assess.

Afterwards, slowly move the probe over the gel until you can hear a heartbeat. You may need to move the search lower on the abdomen during the earlier stages of pregnancy. 

Always follow the instructions as outlined with your home fetal doppler machine.



  1. https://www.abs.gov.au/statistics/people/population/births-australia/latest-release
  2. Rabe, H., Grohs, B., Schmidt, R. M., Schloo, R., Bömelburg, T., & Jorch, G. (1990). Acoustic power measurements of Doppler ultrasound devices used for perinatal and infant examinations. Pediatric Radiology, 20(4), 277-281.
  3. Amran, U. N., Zaiki, F. W. A., & Dom, S. M. (2019). A Review of the Thermal Effects During Pregnancy by Using Ultrasound: Doppler Mode. Pertanika Journal of Science & Technology, 27(1).
  4. https://medlineplus.gov/lab-tests/doppler-ultrasound/#:~:text=A%20regular%20ultrasound%20also%20uses,such%20as%20red%20blood%20cells.