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LD2410 24GHz Human Presence Sensing Module

SKU: SEN0557

LD2410 is a 24GHz human presence sensing radar module using FMCW tech. It detects moving/stationary humans, calculates target distance, and resists environmental factors (temp, humidity, etc.). It penetrates materials, works in enclosed shells, offers up to 6m sensing distance (0.75m resolution), and supports UART/GPIO output. Users can configure parameters via serial. It’s applied in smart light control, ad screen wake-up, UV control, home security, etc.

Angled shot of millimeter wave radar sensor with USB connector, human presence detection module-DFRobot product sku:SEN0557 image.

Downloadable Resources

  • Docs
  • Tech Specs

    • Specification

    Parameter Value
    Nominal Voltage 5V
    Operating Frequency Range 24GHz-24.25GHz
    Modulation Mode FMCW
    Operating Voltage DC5V-12V
    Average Operating Current 80mA
    Detection Distance 0.75m-6m (measured blind zone distance of 30cm)
    Detection Angle ±60°
    Output Interface UART & GPIO (3.3V)
    Default Baud Rate 57600（Best 256000）
    Distance Resolution 0.75m
    Sweep Bandwidth 250MHz
    Ambient Temperature -40 to 85℃
    Dimension 7mm×35mm/0.28×1.38"
    Connector SH 1.27mm to DuPont Female 2.54

    Note: The operating frequency range and sweep frequency both comply with FCC, CE and SRRC standards.

    Pinout

    Board Overview

    Wire Color Name Description
    Blue OUT Object status output, human is detected: output high (3.3V); nobody is detected: output low (0V)
    Green UART_Tx Serial Tx, transmit data
    Yellow UART_Rx Serial Rx, receive data
    Black GND Power ground
    Red VCC Power input

    FAQ

    • Does millimeter wave technology have any impact on the health of users?

      Current research and main conclusions show that millimeter wave signals are not harmful to human health. Millimeter wave signals are higher in frequency and lower in energy, so they are less likely to cause harm to the human body. In addition, the radiation power of 5G millimeter wave technology is very low, far below the limit value of international standards, and will not generate heat radiation.

    • What is millimeter wave?

      As the name suggests, millimeter waves are electromagnetic waves with a wavelength (λ) of about 1 millimeter (more precisely, 1 to 10 millimeters). By using the formula f = c/λ, where c is the speed of light (3E8 m/s), the wavelength can be converted into a frequency range of 30-300 GHz. The millimeter wave frequency band has been designated as the "extremely high frequency" (EHF) band by the International Telecommunication Union (ITU). The term "millimeter wave" is also commonly abbreviated as "mmWave".

    • Is there an arduino library for this product? Does this library work with it? https://github.com/DFRobotd...
      Most importantly, is there a way to adjust the sensitivity parameters from a sketch?

      Hi. can we put plastic or something in front of it like 3d printed "clear" opal filament?

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