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CMO Harmony

Comosystems CMO Harmony compensates for artificial EMFs in homes or rooms. Works for Wi-Fi, bluetooth and electrical networks, among others. For 100 and 200 m².

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Comosystems CMO Harmony

Use a CMO when exposed to EMFs

CMO stands for Magnetic Compensation Oscillator. A CMO reacts to electromagnetic fields (EMFs). A CMO itself produces a weak electromagnetic field when exposed to artificial EMFs.

Comosystems CMO technology

Comosystems makes CMOs by dissolving ions in water. This solution is exposed to electromagnetic fields and has a 'memory' of them. This ion solution is protected by a sturdy aluminium housing.

Passive protection

The CMO creates an electromagnetic field by exposure to an electromagnetic field. This is a property of the ion solution and does not require a source of energy. The CMO will also not 'run out'.

No interference with electronics

The CMO signal is very weak compared to other artificial electromagnetic fields emitted by electronics. So the CMO will not disturb electrical devices.

CMOs for your home or office: HF04 Harmony and HF05 Harmony XL

The HF04 Harmony and HF05 Harmony XL are CMOs for use in large rooms or homes.

HF04 Harmony

  • Shape: Cone
  • Colour: purple
  • Height: 53 mm
  • Diameter: 69 mm
  • Effective area: 100 m²

HF05 Harmony XL

  • Shape: cone
  • Colour: gold
  • Height: 73 mm
  • Diameter: 100 mm
  • Effective area: 200 m²

Types of EMFs to which Harmony reacts

The HF04 Harmony and HF05 Harmony XL compensate for the effects of:

  • Wi-Fi
  • WiMAX
  • Bluetooth
  • DECT wired telephones
  • relay antennas
  • satellite communications
  • electrical networks from low to very high voltage
  • geo-biological disturbances
  • microwave ovens
  • low consumption light bulbs smart meters
  • CPL (Carrying Currents Online)
  • transport (car, plane and train)

Other CMOs for personal or specific purposes

Each CMO compensates for specific types of EMFs and has its own area of operation. Combine personal and specific CMOs for the most complete compensation.



Place the Harmony in the centre of the room or building if possible. If there are several floors, place the Harmony on a shelf or high off the ground to cover the rooms above.

Do not expose the CMO to temperatures above 60°C or prolonged direct sunlight. This may interfere with the ion solution and reduce the CMO's effectiveness.


The CMO is effective for at least 2 years. The manufacturer expects the CMO to remain effective for a long time thereafter, but has not yet been able to confirm this.

Made in France.

Comosystems, S.L.
Reyes Catolicos, 31, 2°
03003 Alicante