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Small rectangular PCB module with gold edge connector and silver RF shield, 24GHz mmWave radar sensor

Seeed Studio

Seeed Studio MR24BSD1 24GHz mmWave Sensor

SKU CH-3YB2-G6HR1

A 24 GHz mmWave radar module monitors sleep quality by detecting breathing rate and body movement while preserving privacy

  • TypeSensors
  • Monitors sleep quality via 24GHz mmWave Doppler radar
  • Detects breathing and movement simultaneously for health tracking
  • Protects privacy with non-identifying radar surveillance
  • Operates safely with ultra-low output power
  • Maintains stable detection regardless of environmental conditions

24GHz mmWave Sleep Sensor

The MR24BSD1 module uses 24GHz Doppler radar to monitor human sleep quality. It detects both body movement and breathing rate while a person is asleep. The sensor operates independently of temperature, humidity, noise, airflow, dust, and light. Output power is low enough to be harmless to the human body.

Privacy-focused monitoring for homes and facilities

This module suits smart-home integrators who need continuous, non-identifying presence detection for sleep safety alarms or respiratory monitoring. It also fits environments such as hotels or care settings where privacy regulations rule out cameras. Buyers who require visual identification, audio recording, or a simple motion-only trigger should look at other sensing technologies.

Check power supply and development interface

Verify that your host system can provide the required supply voltage and current for the radar module. Confirm which communication interface the module exposes for secondary development and ensure your controller has a matching port. Review the physical mounting constraints so the sensor’s field of view covers the intended sleep area without obstruction.

Highlights

  • Monitors sleep quality via 24GHz mmWave Doppler radar
  • Detects breathing and movement simultaneously for health tracking
  • Protects privacy with non-identifying radar surveillance
  • Operates safely with ultra-low output power
  • Maintains stable detection regardless of environmental conditions

Specifications

TypeSensors

Questions about this item

What power supply does the 24 GHz mmWave sensor need to operate?

The module requires a low-voltage DC supply compatible with its onboard regulator; the exact voltage and current ratings are listed in the datasheet.

Can the 24 GHz radar replace an existing PIR motion detector in the same mounting location?

Yes, the mmWave sensor detects both moving and stationary people through light obstructions, so it covers scenarios where a PIR would miss a sleeping or still occupant.

How do I confirm the 24 GHz module is reporting breathing rate and movement correctly after installation?

Observe the serial or digital output stream — valid frames will show periodic respiration waveforms and movement flags that change when a person enters or leaves the detection zone.

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