Close this search box.

What is EMF? All you need to know about electromagnetic radiation

EMF protection that works

Electromagnetic radiation protection device from Comosystem on coffee table
All products are chosen independently by our editors. The Great Address may earn a commission on items purchased.

In the last century, there was a significant increase in the use of technology that relies on electricity and generates electromagnetic fields (EMF). The trend is set to continue with new and innovative technologies. We can not and would not want to stop this development; technology has contributed significantly to improving our lives, and is a key driver of economic and social progress that contributes to our overall quality of life. But what is EMF? Should I be worried about electromagnetic radiation, and which are the best EMF protection products?

Research show that artificial, man-made EMF may negatively impact human health and well-being. They interfere with our stress levels, immune system, and sleep patterns, among other things.

Luckily, there are several simple precautions to protect yourself against  EMF exposure. One such solution comes from Comosystems – their patented technology offers excellent research-based protection against the adverse biological effects of EMF exposure through easy-to-use devices.

We had the opportunity to interview Michel Aerts, the international commercial director at Comosystems. During our conversation, we delved into Comosystems’ CMO technology and discussed everything you need to know about EMF.


WHAT ARE EMFs, AND ARE THEY SAFE. Electromagnetic fields refer to the propagation of a change in space due to the movement of electrically charged particles, such as electrons. This periodic change in space consists of a magnetic field and an electric field that propagate together, hence the name “electromagnetic” field.

Every living and non-living thing you come in contact with has its own electromagnetic field, including humans as well as inanimate objects like buildings and rocks.

When charged particles are moving (and they always are), they produce magnetic fields.

A common way to group electromagnetic fields is into ionising and non-ionising electromagnetic fields. The difference is that ionizing radiation carries enough energy to pull electrons out of their atomic orbit, causing changes in materials. Non-ionising EMFs, on the other hand, can not break chemical bonds, but they can create heating effects.

The electromagnetic spectrum

Both ionising and non-ionising electromagnetic fields include:

  • Natural sources of EMFs such as the Earth’s magnetic field or the sun
  • Man-made sources of EMFs such as electromagnetic radiation from electric blankets, power lines, wiring, appliances, computers, everything wireless (including Bluetooth, AirPods, WiFi), cell towers, smart meters, smartphones and smartwatches.

The natural EMFs that have always been around are considered safe, but the surge in man-made electromagnetic fields poses concerns. The world has far more EMFs than it had only ten years ago, mainly due to the increased use of wireless technology. For example, in many urban areas, the level of electromagnetic radiation generated by technology is over one billion times greater than the natural EMFs that are essential for life.

As this shift happened rather recently and in a relatively short period, we still need to fully understand the potential long-term effects of exposure to EMF.

WHAT ARE THE SOURCES OF EMF. The fastest-growing source of exposure to electromagnetic fields is communications, particularly cell phones and mobile telephony. Other areas where EMFs are used extensively include the electricity supply grid and medical devices like X-ray imaging machines and CT scans. Power stations send electricity through overhead and underground cables and substations to our cities, factories and homes – a vital network of flowing electric current that generates EMFs all around us.

Illustration of common sources of electromagnetic radiation

On a personal level, common sources of man-made EMFs include:

  • mobile phones/cellphones
  • cell towers
  • electrical appliances
  • computers
  • smart meters
  • wireless (Wi-Fi) routers
  • wireless conveniences: baby monitors, security cameras
  • microwave ovens
  • electric blankets
  • bluetooth devices
  • X-ray equipment and other medical equipment
  • radar systems

DO I NEED TO WORRY ABOUT ELECTROMAGNETIC FIELDS. More research is needed in this field to gain a comprehensive understanding of the impact of being exposed to EMFs.

However, in January 2019, over 250 scientists from around the world submitted a petition* (revised from the initial one introduced in 2015) asking for greater protection against EMF radiation in the environment.

Quotes from the petition include:

“Based upon peer-reviewed, published research, we have serious concerns regarding the ubiquitous and increasing exposure to EMF generated by electric and wireless devices,”.

“Numerous recent scientific publications have shown that EMF affects living organisms at levels well below most international and national guidelines. Effects include increased cancer riskcellular stressincrease in harmful free radicalsgenetic damagesstructural and functional changes of the reproductive systemlearning and memory deficitsneurological disorders, and negative impacts on general well-being in humans.”


WHY EMFs ARE HARMFUL. There is scientific evidence to suggest that exposure to EMF suppresses the effects of the body’s antioxidants, causing an imbalance between the production of harmful molecules called reactive oxygen species (ROS) and the body’s ability to neutralise them using antioxidants that can lead to damaging oxidative processes within our cells. ROS molecules play an important role in the progression of inflammatory disorders. 

Dr. Martin Pall, professor emeritus of biochemistry and basic medical sciences at Washington State University, has suggested that non-ionising radiation triggers processes on a cellular level resulting in oxidative stress. Tissues at greatest risk include the brain, the nervous system, the retina and the SA Node, which is the ‘natural pacemaker’ of the heart.

WHAT ARE THE POTENTIAL NEGATIVE EFFECTS OF EMFs ON OUR CELLS AND BODIES. EMF, and in particular the extremely low frequency radiation, impact the human health in a myriad of subtle ways, and studies show that, over time, the biological effects we just talked about are linked to numerous diseases and our overall well-being.

Potential negative effects of EMF on the human body

DISEASES – studies show exposure to electromagnetic fields is linked to numerous diseases, including cancer risk, cardiovascular disease, Alzheimer’s disease and chronic fatigue.

FERTILITY – there are several studies and scientific research on how EMF impact reproductive health

SLEEP DISORDER – quality sleep is crucial for overall well-being as it plays a significant role in maintaining physical health, cognitive function and emotional regulation. It is one of the best predictors of healthy ageing.

A study conducted in 2019 concluded that daily EMF exposure reduces sleep quality and makes people more likely to be depressed.

Additionally, another study showed that EMF exposure may reduce levels of melatonin, a hormone responsible for inducing sleep and promoting the most regenerative stages of rest.

IMMUNE SYSTEM – exposure to electromagnetic fields can potentially function as an immunosuppressive agent, rendering the immune system incapable of defending against toxins and other harmful agents. Consequently, this may increase susceptibility to bacterial and viral infections, mould growth, and exposure to pesticides and other chemicals.

BRAIN AND NERVOUS SYSTEM – multiple studies have found that continuous oxidative stress from EMF exposure could cause memory issues and unclear thinking over time and may even contribute to dementia.

Click here for more in-depth details on Comosystems’ studies related to EMF.

WHAT CAN I DO TO REDUCE THE EXPOSURE TO EMFs. If you live in an urban area and are using modern technology in any shape or form, reducing direct exposure to electromagnetic fields is impossible, but there are ways to protect yourself from over-exposure.

Comosystem Harmony device on cupboard in front of a painting of a ballet dancer

Comosystems have developed a series of products designed to emit a biologically compatible electromagnetic compensation signal that neutralises the possible biological negative impact of EMFs.

Different products protect you when being at home, travelling, using your cell phone / mobile phone, and using your laptop or desktop computer.

All products are based on CMO (Compensating Magnetic Oscillator), a technology developed by Tecnolab-Comosystems Laboratories that was created to offset the adverse effects of human exposure to electromagnetic fields.


WHAT IS CMO TECHNOLOGY, AND HOW DOES IT KEEP ME PROTECTED Science-backed and research-stacked, CMO (Compensating Magnetic Oscillator) is an EMF protection technology designed to protect users from the possible harmful effects of man-made electromagnetic fields from cell phones, smart meters, Wi-Fi, 3G, 4G, 5G and all other sources of EMFs.

A CMO device is activated by being exposed to electromagnetic radiation, and in response to this radiation, the device generates a harmless signal to compensate for the potential negative biological effects of EMFs. 

This compensating signal prevents the radiation from interfering with and disrupting homeostasis, the ability of our cells to maintain a stable internal environment despite changes in the external environment. It is like your body’s thermostat, regulating aspects like temperature, blood sugar levels, and water balance to keep everything in balance and working properly. When there is a disruption in homeostasis, it can lead to various health problems or diseases.

Woman with a mobile phone equipped with a EMF protection device

Important to mention is that, unlike some products that aim to ‘shield’ you from EMF, CMO does not absorb or displace electromagnetic waves. CMO simply compensates for the biological effect so your Wi-Fi, mobile phone and other devices are not affected and work just as before.

WHAT ARE THE BENEFITS OF USING CMO. In recent years, numerous studies have demonstrated that if you want to achieve the best possible levels of health and well-being, then it is essential to take the necessary steps to protect your body from the increasing amount of potentially harmful electromagnetic radiation and environmental stressors that our modern technologies and lifestyles are broadcasting into the spaces and places where we live, work, and sleep.

CMO technology may help to reduce the risks of EMF-related health issues in future. It can provide lifelong advantages by addressing longevity and ageing at the cellular level. Exposure to electromagnetic fields can cause cellular stress, which leads to oxidization and damage to our cells. Researchers have established a connection between oxidation, the immune system, and biological ageing — they are all interlinked. While the immediate effects of using a CMO device may not be noticeable, it can help reduce chronic inflammation in your cells, slowing down the acceleration of cellular ageing. This means that even though you may not see instant results, you can feel at ease knowing that your cells are protected from ongoing damage caused by over-exposure to electromagnetic waves.

HOW CAN CMO WORK WITH NO BATTERY OR POWER SUPPLY. CMO use electromagnetic fields in the environment to function. When the CMO is exposed to electromagnetic fields (telephone, Wi-Fi, microwave ovens, etc.), by resonance effect, the CMO will generate a micro-signal, which is the compensation signal that cancels out the harmful radiation on a biological level.

The intensity of the compensating signal is similar to the power of the magnetic field emitted by the human brain, i.e. extremely low and totally harmless. 

WHAT PROOF IS THERE THAT CMO WORKS. Over more than ten years, research by different scientists around the world has demonstrated and published proof that the compensating signal generated by CMO devices has the required characteristics to prevent biological effects caused by EMFs.

More than 20 biological, neurophysiological and psycho-physiological parameters have been measured, and it has been confirmed that biological parameters affected by EMF were back to a healthy, balanced level with the use of CMO devices.

For more info on the scientific research on CMO, please visit

HAS CMO GOT OFFICIAL RECOGNITION. In order to ensure that the public was not misled, the French Health Products Safety Agency (AFSSAPS), a monitoring and safety agency, conducted a study on Comosystems’ products. AFSSAPS validated the safety, effectiveness and quality of the CMO products. After rigorous testing, AFSSAPS authorised Comosystems to use the following statement officially:

Harmony electromagnetic protection device on kitchen worktop

“Les CMO sont un excellent moyen (…) de nous protéger efficacement de l’incertaine mais probable nocivité des ondes électromagnétiques”. A direct translation to English would be “CMOs are an” excellent way (…) to effectively protect us from the uncertain but likely harmfulness of electromagnetic waves“)


WHAT RESULTS CAN I EXPECT TO SEE IF USING A CMO DEVICE, AND HOW SOON. The results and time will vary from person to person and case by case, but short-term results may include better sleep, stronger resistance to infections and generally being more alert. Some people notice a difference almost immediately, while it can take up to three months for others to feel the full effect of CMO, as everybody has a different sensibility.

However, it may be that the long-term results are the most important. Our understanding of ageing has improved significantly, and ongoing research shows that there are various ways to decelerate the process. One of the most promising anti-ageing approaches is limiting your exposure to man-made EMFs.

For more information, the following section on our website goes through every biological marker individually, with the aim of enhancing your performance and safeguarding against potential health risks –


YOU MENTIONED THAT CMO CANCELS OUT THE HARMFUL RADIATION ON A BIOLOGICAL LEVEL, MAKING THEM HARMLESS TO OUR CELLS, BUT HOW DOES IT WORK. Our sensibility to external input is determined in our cells at the level of ion channel sensors. These channels play a crucial role in cell signalling by allowing ions to enter or exit the cell in response to various stimuli such as sounds, heat and also electromagnetic fields.

Ion channel sensors operate in a non-linear mode and are therefore good amplifiers using the phenomenon called “stochastic resonance”. When cells are exposed to hyperweak external stimuli, stochastic resonance allows these cells to “hear” these signals and identify the stimuli as beneficial or harmful. If the cells decide that the stimuli are beneficial, in this case the compensation signal generated by the CMO, they will “self-tune” on this signal and, over time, adjust to it and gradually integrate it with less and less resistance.

Laptop with EMF protection device


TELL US MORE ABOUT YOUR COMPANY AND TRACK RECORD. Our company, Comosystems, has conducted research and development in EMF protection for more than 20 years. Still, already 30 years ago, our founder, Mr. Maurice Fillion-Robin, recognised the potential impact electromagnetic communication could have on the human body.

To further explore and evaluate the effects of artificial EMFs on biological systems and identify how cells interacted with electromagnetic fields, he established an international team of researchers who were experts in this field. Their primary objectives were to propose an efficient technology capable of compensating for the adverse effects caused by exposure to electromagnetic fields.

After ten years of extensive research, scientific publications, and participation in various conferences, the CMO technology (Compensating Magnetic Oscillator) was launched. The technology was specifically designed to prevent artificial fields in our modern environment from interacting adversely with our health.

Since the creation of the CMO, the team has expanded to include researchers from various academic disciplines, such as quantum physics.

We believe Comosystems’ CMO is one of the most scientifically credible technologies currently available in the area of EMF radiation protection.


TELL US ABOUT THE PATENTED TECHNOLOGY BEHIND CMO. Comosystems uses what is called Compensating Magnetic Oscillator (CMO) technology that stems from a 15-year research programme that studied the effects of electromagnetic environments. The concept of compensating magnetic oscillators was patented already 20 years ago, even if we have updated it technologically several times since then.

CAN YOU EXPLAIN THE SCIENCE BEHIND CMO. CMO technology essentially regulates the ion channels in our cells to help maintain homeostasis, the ability of our cells to maintain a stable internal environment despite changes in the external environment.

Traveller with EMF protection device

The technology used by CMO is based on scientific discoveries in areas such as quantum physics, coherent resonance, water memory and stochastic resonance. Some of these topics are yet to be fully explored and are still being debated. For these reasons, Comosystems has focused its research on measurable biological reality instead of partly unexplained phenomena. It is not enough for a technology to rely solely on vague concepts and theoretical models. To gain credibility in this context, you must present evidence of the technology’s efficiency.

When you address an issue like EMF protection, that means

A. You need to prove that exposure to artificial electromagnetic fields affects several biological parameters and behavioural patterns and measure the extent of this impact. Then, present your findings to a scientific committee that will evaluate your work. If they find your research coherent with established known facts, publish it in scientific journals and present it at scientific congresses.

B. You need to demonstrate that CMO technology efficiently compensates for the damages or imbalances generated by this exposure, measure this compensation, and submit your work to a scientific committee for evaluation. If the results are consistent with known facts, you will be allowed to publish your research in scientific journals or present it at scientific conferences.

Comosystems has successfully proved and demonstrated both A and B through scientific research by an international team of experts in this field, including Prof. Reba Goodman, Prof. Martin Blanck, Prof. Vladimir Binhi, Prof. Yuri Grigoriev and Prof. Madeleine Bastide to mention just a few. The studies were presented at congresses and published in international papers such as the Journal of Cellular Biochemistry.

CMO has also been verified by different independent laboratories. More than 30 studies on various biological parameters and the human response to EMF exposures show biological disturbances can be avoided or eliminated by the simultaneous use of magnetic compensation oscillators (CMOs).

As examples, I would like to highlight the following two studies:

We conducted experiments in collaboration with Prof. Bastide from the faculty of Montpellier. We exposed mice to GSM cell phones, and the results showed a very marked depression of the immune system; antibodies and stress response hormones dropped very markedly during exposure without CMO. The same team demonstrated a significant reduction in the production of hippocampal neurons. This may be a sign of progression to neurodegenerative diseases. These two malfunctions were very clearly compensated for by the presence of the CMO near the mice.

Another significant study was done by Prof. Reba Goodman and Prof. Martin Blank at the Department of Pathology at Columbia University in New York. The study was analysing cellular stress: to quantify the level of stress in cells, there are known biomarkers: two of them are HSP70 (a heat shock protein that helps our cells stay healthy under stressful situations) and S.R.E (Serum Response Element).

The study clearly demonstrated a significant increase in cellular stress when exposed to EMF and also confirms that the CMO completely compensated for this cellular stress. This study has been published in the International Journal of Cellular Biochemistry.

For additional examples, a summary of papers, publications and congresses can be found here

WHAT IS ACTUALLY INSIDE THE CMO. Each CMO device is made of aluminium, and inside is a small tube (in the case of the cones, it is a sphere) that contains an electromagnetically charged saline solution. This solution has the specific qualities of structured water, similar to the water of your cells.

We mentioned earlier that if the cells decide that the stimuli are beneficial, they will ‘self-tune’ on this signal and, over time, adjust to it and gradually incorporate it with less and less resistance. The active solution inside the CMO has the capacity to store signals that your body will be able to use as a stabilising effect, and it continues doing that even when exposed to other electromagnetic fields. Internal tests have shown the sustainability of the CMO compensation signal, even after 20 years.


WHICH CMO PRODUCT IS RIGHT FOR ME. We have developed products for four different usage areas. The main product is for protection when you are at home. It provides coverage for everyone in the house/apartment. When you go outside or travel, you need to remain protected, so we designed a small medallion that covers most EMF emission sources, but it is limited to one person; it will generate a bubble of protection just around you. You can take it with you when driving, flying, walking, jogging etc.

The different protections do not cancel the effects of each other but complement each other in a specific way, per application:

AT HOME. The product for protection from electromagnetic fields at home is called Harmony, a beautifully shaped cone in coated aluminium. Harmony comes in two different sizes, depending on the size of your home. The smaller (MF04 HARMONY) protects homes up to 1200 sq. ft. / 110m2, and the larger (MF05 HARMONY) covers homes up to 2200 sq. ft. / 205m2.

The walls in your home do not stop the CMO compensation signal, but it is essential that the CMO is placed in the centre of the house/apartment. Also, it should be placed on a shelf or tall piece of furniture.

Comosystem EMF protection devices for your mobile and for protection at home

FOR CELL PHONES AND TABLETS. MP24 EASYCALL is designed to protect you from the electromagnetic fields generated by the electronic components of cell phones and radio communication. Since these devices come in contact with your body, this protection is specifically suited for this use. With a CMO MP24 EASYCALL, your mobile phone becomes “biocompatible”, which means it is compatible with you and your body.

FOR COMPUTERS AND LAPTOPS. PC16 PCZONE is a personal protection device designed to compensate for the electromagnetic radiation emitted by electronic components, screens, Bluetooth and Wi-Fi from computers, laptops and tablets. These devices are in direct contact with your body, and PC16 PCZONE is specifically developed and designed to protect from EMFs from these devices. The CMO device can be easily fitted anywhere on your computer to provide the necessary protection.

WHEN TRAVELLING. The TR26 Traveler is a personal multifunctional device that offers protection while you travel. It creates a “bubble of protection” of approximately 10 feet /3 metres and compensates for various types of EMF exposure you may encounter when travelling by plane, train, car or outside your home. However, it is important to note that it does not replace the need to equip mobile phones and computers that are in physical contact with your body. For best results, wear the TR26 close to your body by keeping it in your pocket, wallet or as a necklace. It also comes with a snap hook-ring accessory and can be used as a key ring.

EMF protection from Comosystem when travelling and when using your computer or laptop

The packaging is made of 100% pure and biodegradable corn residue. Instead of printed instructions, each product comes with a QR CODE and barcode for online access to all technical information about the product.

The products come with a certificate of authenticity and guarantee. Scanning the barcode or QR code provides a link to a registration page. Two days after registering your CMO device, you will receive a certificate of authenticity and a certificate for the 2-year warranty in your inbox.


HOW CAN CMO WORK IF THERE IS NO PLUG OR BATTERY. CMO does not need batteries or electric power as it is activated by the electromagnetic fields it is exposed to.

DO I NEED TO “RECHARGE OR REFILL” THE DEVICE. No, once you have bought and received youR CMO device, you are set for the rest of your life, and you can stop to worry about EMFs.

WHERE DO I PLACE THE CMO. The CMO Harmony must be placed in the centre of your home/apartment, on a shelve or a tall piece of furniture.

MY HOUSE IS VERY BIG, AND IN A L SHAPE, HOW MANY DEVICES DO I NEED. Since it is a bubble, you need to measure the diameters: on the ground, you must see if the footprint of your home fits within a 1200 sq. ft. / 110m2 circle for the MF04 device and 2200 sq. ft. / 205m2 for the MF05 device. The best is to send us a plan of your house, and we will advise what will suit you best.

CAN CMO PENETRATE WALLS. Yes, it can. With a diameter of up to 11 metres, typical workplace and home environments can be passively optimised to a more healthy state.

DOES THE CMO HAVE AN INFLUENCE ON THE QUALITY OF TRANSMISSION OR RECEPTION OF MY DEVICES (telephone, wi-fi network …). No, CMO does not in any way affect the functionality of any devices as it only works on a biological level. The intensity of the signal emitted by the CMO is hyper-weak (approximately a million times weaker than the intensity of the signal emitted by a mobile phone).

I USED AN EMF METER TO TEST YOUR PRODUCT, AND IT IS NOT LOWERING THE INTENSITY OF THE EM FIELDS: WHY. Our technology does not interact with your communication devices. Still, it interacts with your body and your cells: so, it is normal that the CMO does not change the intensity of the waves: the intensity is not the most important factor; what is important is the very sensitive level of receptivity of your body’s cells.

HOW DO I KNOW IT IS WORKING — I RECEIVED MY CMO, BUT I DO NOT FEEL ANY DIFFERENT. Everyone is exposed to EMFs and impacted at a biological level, whether you feel it or not. If you are EHS (Electro-Hyper-Sensitive), you may feel a positive effect, but if you are not, like most of us, you will not feel anything.

However, the signal from a CMO has been measured, which proves it emits the compensating signal. More than ten years of peer-reviewed research by different scientists worldwide have demonstrated that the compensating signal has the required characteristics to prevent biological effects caused by EMFs.

HOW LONG DO THE DEVICES WORK, LIFESPAN. Comosystems have done in-house testing on products for the last 20 years, and there are no signs that time has any impact on the performance of the CMO. You could only damage the technology if you heat the device above 60°C, etc.

Parts, on the other hand, are guaranteed for a period of two years.

WHERE ARE YOUR PRODUCTS MANUFACTURED. All products are assembled in France by an ISO 9001-certified company specialized in working with high-tech products.

DISCLAIMER: THE GREAT ADDRESS and its materials are not intended to treat, diagnose, cure or prevent any disease. The information and products presented on this site are not intended for medical use nor do they make any medical claims and do not substitute for medical advice. Always seek the advice of your physician or another qualified healthcare provider for any questions you have regarding a pre-existing medical condition, if you are pregnant and/or are breastfeeding, and before undertaking any diet, exercise or other health-related programs.

This article was published on and some information may have changed.

EMF protection devices from Comosystems

comosystems TR26 TRAVELLER
TR26 TRAVELLER EMF protection
comosystems MP24 EASYCALL
MP24 EASYCALL EMF protection
comosystems PC16 PCZONE
PC16 PCZONE EMF protection
comosystems harmony mfo4
MF04 HARMONY EMF protection
comosystems harmony mfo5
MF05 HARMONY XL EMF protection
Related articles