DFRobot Mmwave - 24GHz Human Presence Sensing Module (6m)
Description
- DFRobot Mmwave - 24GHz Human Presence Sensing Module (6 m)
- Employs advanced FMCW technology for accurate detection
- Unaffected by environmental factors like temperature or light
- Features adjustable sensing distance and sensitivity
- Supports UART and GPIO output for versatile use
- Ideal for projects like smart light control and home security
The DFRobot Mmwave - 24GHz Human Presence Sensing Module (6 m) is a highly sensitive radar module designed to detect human presence within a specified area. It employs frequency-modulated continuous wave (FMCW) technology, combined with radar signal processing and an accurate human sensing algorithm, to discern both moving and stationary human targets. This module is also capable of calculating auxiliary information, such as the distance to the target.
The performance of this radar module is not affected by environmental factors such as temperature, brightness, humidity, or light fluctuations. The FMCW radar's ability to penetrate materials allows the module to function effectively even when enclosed in a shell, without the need for openings.

Primarily intended for indoor use, this microwave radar can detect moving or micro-moving humans within its detection area and relay the results in real-time. It boasts a sensing distance of up to 6 meters and a resolution of 0.75m.
The module also features a serial communication protocol, enabling users to adjust the sensing distance range, sensitivity at various intervals, and delay time to suit different applications.
The DFRobot Mmwave - 24GHz Human Presence Sensing Module (6 Meters) supports UART and GPIO (high and low level) output. When paired with Arduino or other controllers, it can be utilized in a wide range of projects, including smart light control, human body induction for advertising screens, UV light control, and home security.
- 1x 24GHz Human Presence Sensing Module
- 1x Connector
- 7 x 35 mm / 0.28 x 1.38 inch
- Operating Frequency Range: 24GHz-24.25GHz
- Modulation Mode: FMCW
- Operating Voltage: DC 5V - 12V
- Average Operating Current: 80 mA
- Detection Distance: 0.75 - 6 m (Measured blind zone distance: 30cm)
- Detection Angle: ±60°
- Interface: UART & GPIO (3.3V I/O level)
- Default Baud Rate: 57600
- Distance Resolution: 0.75 m
- Sweep Bandwidth: 250 MHz
- Ambient Temperature: -40 to 85 °C
- Connector: SH 1.27mm to DuPont 2.54
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If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorisation (RA) before initiating a return request.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
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* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
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Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".