24GHz mmWave Sensor - Human Stationary Presence Module

SeeedSKU: 105464
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The mmWave Human stationary Presence Radar Sensor Module is a self-contained module near distance sensor based on Infineon mmWave FMCW industrial radar operating at 24GHz. The unit is built with the Doppler radar signal processing mechanism and standard algorithm which enables distinguishing between the occupied and unoccupied conditions and identifying human activities. It is an ideal solution for high-accurate, self-regulation, privacy-protected, secure biotic radar systems in applications, such as smart homes, human behaviour detection, and danger alarm.

Compared to the traditional PIR sensor, this module has more sensitivity to human activities like standing, moving, and falling. Not like the PIR sensor's short response, the module keeps sensing people continuously which makes it useful in a living room, hotel, or even prison.

The module contains a standard self-learning algorithm, it can detect simultaneously, and it can manage different environments whether the location is noisy or quiet. Above that, it also highly decreases the interference of non-living objects and the detection output has a 95% accuracy.

There is a two-array, high-performing antenna built on the module and it has fan-beam pattern beamwidth where the horizontal is 90° and the vertical is 60° which makes its sensing area as high as 96m2. It even can sense micromotion. The module is very adaptable to the environment and it can maintain proper functioning even if the environmental factors are different. The output power is very low, which makes it harmless to the human body even in prolonged exposure.


  • Reliable tech: Infineon mmWave FMCW industrial radar
  • Enabled theory: Apply Doppler radar technology with Near Distance Sensor(NDS) operating at 24GHz
  • Standard algorithm: Distinguish occupied/unoccupied conditions and identify human activities in the self-adaption environment
  • Perfect privacy protection: Provide surveillance capabilities without identification
  • Flexible install location: Operate properly regardless of the shelter blocks
  • Harmless working status: Output 10 dBm of harmless energy power
  • High accuracy: Decrease the interference of non-living objects and the output results achieve more than 95% accuracy
  • High robustness: Maintain proper functioning in a complex environment containing different temperatures, humidity, noise, air currents, dust, light and so on.
  • High-performing antenna: Sense even micromotion in a fan-beam pattern where Horizontal90°/ Vertical60°
  • Measurement distance:
    • Motion perception maximum distance: up to 12 meters
    • Micromotion perception maximum distance: up to 5 meters
    • Body perception maximum distance: up to 3 meter
  • Detecting time:
    • Unoccupied to occupied status: within 0.5 seconds
    • Manned to unmanned status: above 1 minute
  • Customizable radar: Support secondary development including radar parameter, protocol, antenna, function
  • Product number: Seeed 101990883


mmWave Sensor PIR Sensor CCTV Camera Trigger Radar
Induction mechanism Millimeter wave radar algorithm Thermal induction Visible light image Centimeter wave radar
motion trigger
Temperature effect No Get effected if >=40°C No No
Penetration ability Can penetrate non-
metallic objects
No No Can penetrate
non-metallic objects
Working environment All Can not work in an environment with
smoke, dust, and high temperature
Requires good lighting All
Life span >=10 years ≈1000h >= 3 years >= 10 years
Stability Excellent Once used for a long time, the
sensing distance will be shortened
Easily affected by light and lens Excellent
Advantage Accurate, reliable Low power consumption, easy to Install Accurate, recording Low cost
Function Breath and life detection Human presence, security alert Security monitoring Switch trigger, save energy
Limitation Electromagnetic noise Thermal noise Privacy concern Poor body static measurement



Package Contents

  • 1x 24GHz mmWave Sensor - Human Stationary Presence Module

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