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This 24GHz millimeter-wave radar sensor employs FMCW, CW multi-mode modulation and separate transmitter and receiver antenna structure.

In working, the sensor first emits FMCW and CW radio waves to the sensing area. Next, the radio waves, reflected by all targets which are in moving, micro-moving, or extremely weak moving state in the area, are converted into electrical signals by the millimeter-wave MMIC circuit in the sensor system. After that, these signals will be sent to the processor and processed through the related signal and data algorithms. Then, the target information can be solved out.

The millimeter-wave radar can sense the human presence, stationary and moving people within the detection area. Moreover, it can even detect static or stationary human presence such as a sleeping person. There are two ways provided to output detection result: serial port and I/O port switch quantity. Besides that, the sensor module features strong sensing reliability, high sensitivity, small size, easy to be used or embedded in applications.

Specification
Power Supply: 3.6~5V
Operating Current: 90mA
Detection Distance: 9m
Equivalent Transmit Power: 9-12dBM
Beam Angle: 100*40°
Modulation Mode: FMCW, CW
Operating Frequency: 24GHz
Operating Temperature Range: -40~85℃
Baud Rate: 115200
Dimension: 24*28mm/0.94*1.10\"
Shipping List
mmWave - Human Presence Detection Sensor (9 Meters) ×1
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"stock": { "available": true, "quantity": 7, "lead_time_days": 0 }, "moq": 1, "multiple": 1, "image": "https://www.dataalchemy.com/python/getu/0bcd16c6-c90b-41fa-956b-6948cbc4829a" } ], "amazon": { "available": true, "products": [ { "asin": "B0BYMYMXLP", "title": "DFROBOT mmWave Radar - Human Presence Detection Sensor (9 Meters)", "brand": "DFROBOT", "image": "https://m.media-amazon.com/images/I/41S5wjXBqCL._SL75_.jpg", "url": "https://www.amazon.com/dp/B0BYMYMXLP?tag=atariguidz-20", "description": "Introduction
This 24GHz millimeter-wave radar sensor employs FMCW, CW multi-mode modulation and separate transmitter and receiver antenna structure.

In working, the sensor first emits FMCW and CW radio waves to the sensing area. Next, the radio waves, reflected by all targets which are in moving, micro-moving, or extremely weak moving state in the area, are converted into electrical signals by the millimeter-wave MMIC circuit in the sensor system. After that, these signals will be sent to the processor and processed through the related signal and data algorithms. Then, the target information can be solved out.

The millimeter-wave radar can sense the human presence, stationary and moving people within the detection area. Moreover, it can even detect static or stationary human presence such as a sleeping person. There are two ways provided to output detection result: serial port and I/O port switch quantity. Besides that, the sensor module features strong sensing reliability, high sensitivity, small size, easy to be used or embedded in applications.

Specification
Power Supply: 3.6~5V
Operating Current: 90mA
Detection Distance: 9m
Equivalent Transmit Power: 9-12dBM
Beam Angle: 100*40°
Modulation Mode: FMCW, CW
Operating Frequency: 24GHz
Operating Temperature Range: -40~85℃
Baud Rate: 115200
Dimension: 24*28mm/0.94*1.10\"
Shipping List
mmWave - Human Presence Detection Sensor (9 Meters) ×1
", "features": [ "【24GHz High Precision Stillness and Motion Detection】: With the Doppler radar technology and 24GHz working frequency, combined with FMCW and CW multi-mode modulation, this mmWave Radar sensor can accurately detect all movements, micro-movements, and extremely weak movements within a 9-meter range. Whether it's subtle human movements or stillness and sleep states, this sensor can accurately perceive them.", "【Compact Size, Easy to Integrate】: The mmwave sensor's size is only 24*28mm, and it uses a 1Tx1Rx antenna structure, which is very suitable for integration into various systems or mobile devices, providing great convenience for various projects.", "【Strong Anti-interference Ability (From -40 to 85℃)】: This mmwave presence sensor has outstanding anti-interference ability and can work stably in an environment of -40~85℃. Whether it's snow, fog, haze, temperature, humidity, dust, light, or noise, none of these can affect its working efficiency, ensuring stable performance in any environment.", "【Wide Range of Application Scenarios】: Due to its high precision and strong anti-interference ability, this presence sensor is widely used in collision warning for autonomous driving cars, human activity monitoring in smart homes, precise control in industrial automation, non-contact monitoring in healthcare, inventory management in retail and logistics, obstacle avoidance and positioning in drones.", "【High Flexibility with Various Output Options】: This human presence sensor provides two types of sensing result output methods. You can choose to output through the serial port or through the I/O port, which is very flexible and easy to expand. At the same time, it provides various available example codes that can meet the needs of makers in different projects." ] } ] }, "metadata": { "generated_date": "2026-04-25", "last_updated": "2026-04-25", "data_sources": [ "Digi-Key", "Newark", "TME", "Amazon" ], "completeness": 0.95, "version": "1.2" } } }, "pagination": null, "nav": { "home": "/python/html5/index.html", "brands": "/python/html5/menu_brand_index/menu_brand_index_brands_87101ba214.html", "parts": "/python/html5/menu_part_index/menu_part_index_parts_909e6bf0ca.html", "attributes": "/python/html5/menu_attr_index/menu_attr_index_attributes_d7f67a250d.html" } }