The HLK‑LD6004 is a high‑precision 60 GHz FMCW millimeter‑wave radar module developed by Hi‑Link, built on the advanced ADT6101P chipset. It integrates a 57–64 GHz RF transceiver, a 2T2R AIP antenna, 1 MB Flash, a dedicated radar signal‑processing unit, and an ARM Cortex‑M3 core. Using FMCW signal processing and advanced radar algorithms, the LD6004 supports multi‑target 3D human presence detection, capable of identifying movement, micro‑motion, and stationary human bodies while outputting real-time x/y/z coordinates for up to 3 targets. Its ±60° wide beam, UART/GPIO output, and compact 25 × 31.5 mm form factor make it ideal for smart home, lighting, security, and professional indoor sensing applications. Features - Product Highlights FMCW Radar Sensing: High‑sensitivity detection of human presence and distance using Frequency Modulated Continuous Wave technology. 60 GHz Operating Band: High-frequency performance (57–64 GHz) with an integrated 2T2R AIP antenna. 3D Coordinate Output: Supports real-time tracking of up to 3 moving targets with precise x/y/z coordinate data. Wide Detection Angle: Exceptional coverage with a ±60° horizontal and ±60° vertical field of view. Comprehensive Detection: Capable of identifying active movement, micro‑motion (breathing/fretting), and completely static human bodies. Robust Stability: Completely immune to environmental interference such as temperature, humidity, noise, airflow, dust, and light. Flexible Mounting: Compact 25 × 31.5 mm design supporting both pin‑header and SMT mounting for seamless integration. High Precision: Achieves a 95% recognition accuracy rate in standard indoor environments. Application Scenarios Smart Home Appliances: Automatically wakes up or adjusts device modes (air conditioners, TVs) based on human occupancy. Intelligent Lighting: Precise control of lighting systems in offices, warehouses, and smart buildings to maximize energy savings. Hotel & Security Automation: Real‑time room occupancy monitoring and intrusion detection for enhanced safety. Personnel Monitoring: Accurate multi-target tracking for flow analysis and indoor safety management systems. Technical Specifications ① Functional Parameters Parameter Min Typ Max Unit Max detection targets — — 3 Targets Distance accuracy — 0.4 — m Sensing distance (Wall) 0 — 6 m Recognition accuracy — 95 — % ② Electrical Characteristics Operational Parameter Min Typ Max Unit Operating voltage (VCC) 3.1 3.3 3.5 V Operating current (ICC) — 135 600 mA Operating temperature –20 — 85 ℃ ③ RF Characteristics Operational Parameter Min Typ Max Unit Service frequency 58 — 64 GHz EIRP — 12 — dBm Horizontal beam FOV –60 — +60 ° Vertical beam FOV –60 — +60 ° Packing List HLK‑LD6004 Module Option: 1 × HLK‑LD6004 Radar Module HLK-Test-Kit 1 × Test Kit w/o Module FAQ - Frequently Asked Questions 1. What is the main advantage of 60GHz radar over 24GHz?The 60GHz band offers higher range resolution and sensitivity. This allows the LD6004 to detect micro-motions (like breathing) much more accurately and output detailed 3D coordinates which is difficult for 24GHz modules. 2. Can the HLK-LD6004 detect stationary people?Yes, through advanced FMCW signal processing, it can detect the micro-vibrations of a human body, enabling it to maintain static presence sensing even when a person is sitting still or sleeping. 3. How many targets can it track simultaneously?The module can track and output the x/y/z location data for up to 3 targets at the same time. 4. Is the module affected by pet movements?While radar is sensitive to all movement, the LD6004 uses human body sensing algorithms to filter out interference. However, large pets may trigger the sensor; sensitivity can be fine-tuned via UART commands. 5. Does it work behind plastic or glass?Yes, 60GHz signals can penetrate non-metallic materials like plastic housings or glass, allowing the sensor to be completely hidden inside a product's casing for better aesthetics. 6. What interface is used for data output?It primarily uses UART for reporting detailed target coordinates and status, and also features GPIO pins for simple high/low level presence signals.
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