LD2410B is a highly sensitive 24GHz human presence status sensing module developed by Hi-link. It operates based on the principle of FMCW (Frequency-Modulated Continuous Wave) to detect human targets within a defined space. Through the integration of advanced radar signal processing and a precise human body sensing algorithm, it achieves exceptional sensitivity, identifying both moving and stationary human bodies (including sitting, lying, or micro-movements) and calculating real-time auxiliary information such as target distance. Optimized for indoor AIoT applications, the LD2410B provides reliable detection results with a maximum sensing distance of up to 5 meters and a distance resolution of 0.75m. A dedicated visual configuration tool allows users to customize sensing ranges, multi-level sensitivity for different intervals, and unmanned delay times to suit diverse smart scenarios. Supporting both GPIO and UART output, this module offers a plug-and-play experience for flexible integration into various smart home and industrial terminal products. Features & Product Highlights 24GHz ISM Band: Operates on global frequencies, conforming to FCC and CE spectrum regulations. Plug-and-Play: Simple assembly process for rapid development and deployment. High Sensitivity: Detects moving, static, and micro-movements (e.g., breathing) that traditional PIR sensors miss. Wide Detection Angle: Offers a broad coverage area of up to ±60 degrees. Precision Zoning: Supports sensing range division and blocks interference from outside specific target intervals. Multi-level Parameters: Intelligent adjustments for distance gates and sensitivity levels to adapt to scene changes. Compact Design: Minimalist form factor with a size of only 7mm x 35mm for embedded applications. Environmental Adaptability: Sensing is unaffected by temperature, brightness, humidity, or light fluctuations. Shell Penetration: Excellent signal penetration allowing it to be hidden inside product housings without opening holes. Wide Voltage Input: Supports a 5V - 12V wide voltage power supply. Product Parameters Parameter Specification Operating Frequency 24GHz ~ 24.25GHz (ISM Band) Modulation Principle FMCW Max Sensing Distance 5m (Adjustable) Detection Angle ±60° (Horizontal/Vertical) Distance Resolution 0.75m Power Supply 5V ~ 12V DC Average Current ~80mA Output Interface UART / GPIO (3.3V Logic) Application Scenarios Smart Lighting: Automatically controls public lighting, sensor lights, and bulbs by detecting presence in a room or corridor. Advertising Screens: Induction wake-up for digital signage; screens turn on when approached and sleep when empty to save power. Life Safety: UV lamp protection to ensure lights turn off when people are present, and intrusion alarms for hazardous zones. Smart Home Appliances: Automatically turns off TVs, air conditioners, and other electronics when a room is vacant for energy efficiency. Intelligent Security: High-precision identification of individuals intruding or staying within a specific monitored range. Packing List HLK-LD2410B 1 x LD2410B Module HLK-Test-Kit 1 x Test Kit w/o Module FAQ 1. How does the LD2410B differ from a standard PIR sensor?Unlike PIR sensors that only detect moving heat signatures, the LD2410B uses radar waves to detect micro-movements (like breathing) and can identify a person even if they are perfectly stationary. 2. Can the LD2410B see through walls?Radar waves can penetrate thin non-metallic materials like plastic, glass, and wood. However, it cannot penetrate metal or thick reinforced concrete walls. 3. Is the LD2410B affected by pets?Since it is a high-sensitivity sensor, pets can trigger it. You can mitigate this by adjusting the sensitivity levels of specific distance gates via the visual configuration tool. 4. How do I configure the module?You can connect the module to a PC via a USB-to-TTL adapter and use the "LD2410 Tool" software to adjust distance gates, sensitivity, and delay times in real-time. 5. What is the "Distance Gate" feature?The 5m range is divided into 8 gates (0.75m each). You can independently set the moving and static sensitivity for each gate to filter out fans or moving curtains at specific distances. 6. Does it support mobile apps for configuration?Yes, the LD2410B (Bluetooth version) can be configured via the HLKRadarTool app on iOS and Android devices. Download Resources HLK LD2410B Life Presence Sensing Module Manual V1.04 HLK-LD-KIT-V2.0 LD2410B Serial communication protocol V1.07 LD2410 Tool EN (English version) Learn More: What is HLK-LD2410B and how to use it?
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