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Ever more efficient motion and presence detectors

The ARGUS range of presence and motion detectors from Schneider Electric has been enriched with several new models which increase the possibilities offered at different application levels.
These detectors benefit from advanced infrared (PIR), ultrasound, high frequency and dual technology capabilities.
Ultra-sensitive ARGUS occupancy detectors have the ultimate level of reliability, efficiency and cost-effectiveness for controlling interior lighting.

movement detector

Difference between motion and presence detector

  • A motion detector turns on the light when a person enters the field and makes a movement.
    It is usually installed outdoors and is weather resistant.
    Activation is linked to a built-in timer which determines the operating time. There needs to be a new movement after extinction to restart the process.
  • A presence detector is reserved for use inside a building and activates the lighting without interruption as long as a presence is detected. After the person leaves the room, the detector cuts off the power after a predetermined period of time (a few minutes).


ARGUS detectors are designed to detect the presence and movements of individuals who are within the limits of controlled spaces.
The advantages of this equipment can be summarized as follows:

  • These detectors are used to control different lighting loads (LED, incandescent lamp, LV halogen lamp and fluorescent lamp).
  • They combine infrared and ultrasound detection technologies as well as high frequency (for movements made at great distances).
  • Programming is done easily via an infrared remote control.

Several technologies in the range of presence detectors

The progress recorded in the realization of the new presence detectors has been thanks to the different technologies used.
We can thus list four technologies:

  1. Passive infrared (PIR)

Incorporating a segmented lens, these detectors which are sensitive to heat sources, for example human, divide coverage areas into easy-to-monitor presence areas and are ideal for detecting walking or any other form of movement in small, confined spaces presenting high levels of movement.

2. High frequency

Using the Doppler effect, high-frequency detectors allow the detection of small movements at long distances.
Independent of temperature and not requiring direct visibility of the moving subject.
The signals from these detectors can even pass through solid materials, such as wood, glass or masonry.

3. Dual technology

Combining PIR and ultrasonic technologies, sophisticated dual-technology occupancy detectors provide optimum efficiency in most potential applications.
These detectors detect room occupancy by monitoring for acoustic frequency shifts caused by minor movements such as computer typing or reading.
As no unobstructed line-of-sight is required, they are ideal for enclosed spaces such as offices or washrooms.

4. DALI detector

Finally, it is also necessary to mention the DALI presence detector units which allow the installation of zones equipped with a “Master” element which controls up to 10 “slave units” as well as the possibility of ordering ballasts for the control elements. ‘lighting.

Expansion of the range of motion detectors

The range of motion detectors is also enriched with two new models intended for interior false ceilings with 360 ° surface surveillance.
These new products are available in a 1-channel or 2-channel version.

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