24G Millimeter Wave Radar Sensor - Intelligent Human Body Motion Detection Module, High Sensitivity & Low Power Consumption (LD2420)

1. Product Introduction

🛠️ The HLK-LD2420 is a cutting-edge 24 GHz radar module engineered for top-tier performance in human body detection. This advanced module incorporates a sophisticated send-and-receive antenna along with proprietary algorithms that leverage millimeter-wave radar technology for accurate distance measurement. The innovative signal processing capabilities found in S3 series chips enable the module to achieve precise perception of both gross movement and subtle micro-movements, as well as stationary individuals.

🪶 Designed primarily for indoor environments, the HLK-LD2420 excels in real-time detection of human presence or movement within its designated perception area. With a remarkable maximum sensing range of up to 8 meters for moving individuals, this module offers customizable detection settings, allowing users to adjust sensing distance, sensitivity levels, and refresh intervals for enhanced adaptability. It features versatile connectivity through GPIO and UART interfaces and promises plug-and-play convenience for seamless integration across various smart applications.

🎯 2. Product Features and Benefits

🔧 2.1 Features

• Integrated with a single-chip intelligent millimeter-wave sensor SoC and advanced algorithm firmware
• Compact design with ultra-small dimensions: 20 mm x 20 mm
• Factory-loaded human detection configuration allows for immediate operation without initial setup hassle
• Operates within the 24 GHz ISM frequency band, compliant with FCC, CE, and non-committee regulations
• Requires a power supply of 3.3 V, accommodating a wide input range of 3.0 V to 3.6 V
• Efficient with an average operating current of only 50 mA
• Targets both moving and micro-moving human bodies
• Provides real-time updates of detection results
• Includes visualization tools for configuring detection distance intervals, sensitivity levels, and reporting times
• Supports partitioned sensing ranges, effectively filtering out external disturbances
• Short-range sensing capabilities, detecting from as close as 0.2 m with no blind spots
• Exceptional coverage angle of 60° for expansive detection capability
• Versatile installation options, allowing for ceiling or wall mounting
• Independent configuration of trigger and hold states enhances anti-interference performance

🪶 3. Application Scenarios

• Smart Home: Detects human presence and proximity, relaying information to central control systems for automated operation of household appliances.
• Smart Business: Measures human approach and proximity within predetermined intervals, activating screens or other devices in the presence of individuals.
• Smart Security: Utilized in access control systems, building intercoms, and electronic peepholes for enhanced security measures.
• Smart Lighting: Accurately identifies human presence and position for effective control of lighting systems in public and communal spaces, including sensing lights and bulbs.

🪶 4. Hardware Description

🔧 Below, you will find detailed information about the connectivity features of the HLK-LD2420 module:

🧰 The module comprises a set of five pin holes (pins not included) categorized as J2 for power supply and communication, while J1 serves as the SWD interface for MCU programming and debugging. The pin descriptions are as follows:

🧩 4.1 Dimensions

All measurements are presented in millimeters (mm). The module thickness is 1.2 mm, with a tolerance of ±10%.