SKU: SENS-2451
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Hi-Link HLK-LD2412 24GHz Human Presence Radar Sensor - UART/GPIO Output

₹639.00 (Inclusive of all taxes)
Out of Stock

The Hi-Link HLK-LD2412 is a 24GHz FMCW radar module for high-sensitivity human presence detection, supporting both motion and static sensing up to 9 meters. It features UART and GPIO outputs for easy integration with microcontrollers like Arduino, ESP32, and Raspberry Pi for smart automation and security applications.

Features

  • 24GHz FMCW radar technology for detecting both moving and stationary human presence.
  • Maximum sensing range of 9 meters with a wide ±75° detection angle.
  • Configurable via visual PC tool for distance zones, sensitivity, and delay settings.
  • Dual output interfaces: UART for data and GPIO for trigger/alarm signals.
  • Compact, ready-to-use module for plug-and-play integration into smart devices.

Out of stock

Description

The HLK-LD2412 module utilizes Frequency Modulated Continuous Wave (FMCW) radar at 24GHz to penetrate common materials and detect subtle human movements and even stationary presence through micro-motions like breathing. Its advanced signal processing algorithms filter out environmental noise, providing reliable occupancy data for energy management and security systems.

Designed for indoor applications, the module outputs real-time target distance and motion state information. Its configurable parameters, including per-zone sensitivity and unmanned delay, allow for precise adaptation to specific room layouts and usage patterns, minimizing false triggers.

Key Features

  • Advanced FMCW Radar Sensing: 24GHz technology provides high sensitivity for detecting both dynamic and static human targets, unaffected by ambient light or temperature.
  • Precision Configuration Tool: Windows-based GUI enables fine-tuning of detection zones (0.75m resolution), sensitivity levels, and hold time for optimized performance.
  • Dual-Interface Output: Offers flexible connectivity with a UART interface for serial data communication and a GPIO pin for direct trigger or relay control.
  • Wide-Angle Coverage: A broad ±75-degree field of view ensures comprehensive area monitoring from a single mounting point.
  • Compact & Integrated Design: The module combines the radar RF front-end, processor, and antenna in a single, shielded unit for reliable operation and easy installation.
  • Optimized Performance-to-Cost Ratio: Delivers commercial-grade radar sensing capabilities in a compact, high-value package suitable for IoT and smart home projects.

Applications

  • Smart Lighting & HVAC Control: Automate room lights and climate systems based on precise human occupancy detection to conserve energy.
  • Security & Intrusion Alarm Systems: Integrate as a trigger for alarms or notifications when unauthorized presence is detected in secured areas.
  • Office Occupancy Monitoring: Monitor desk or meeting room usage for space optimization and cleaning scheduling.
  • Elderly Care & Safety Monitors: Detect lack of movement in a room as a potential alert for falls or medical emergencies.
  • Interactive Retail Displays: Activate digital signage or product information screens when a customer approaches.

Technical Specifications

ManufacturerHi-Link
Model NumberHLK-LD2412
Technology24GHz FMCW Radar
Detection TypeHuman Presence (Motion & Static)
Max Sensing Distance9 meters
Distance Resolution0.75 meters
Detection Angle±75 degrees
Output InterfacesUART, GPIO
Configuration InterfaceUSB-to-UART (via PC Tool)
Primary ApplicationIndoor Human Presence Sensing

Frequently Asked Questions

What is the operating voltage for the HLK-LD2412 module?

The module typically operates at 5V DC. Always verify the exact voltage requirements from the official Hi-Link datasheet or pin markings before connecting power. Exceeding the specified voltage can permanently damage the radar circuitry.

How do I configure the detection zones and sensitivity?

Configuration is done via a Windows-based visual tool provided by Hi-Link. Connect the module's UART pins (TX, RX, GND) to a USB-to-serial adapter. The tool allows you to set up to 8 distance zones, adjust motion/static sensitivity per zone, and configure the delay time before reporting an 'unoccupied' state.

Can this sensor detect through walls or glass?

While 24GHz radar waves can penetrate some non-metallic materials like drywall or plastic, their effectiveness is greatly reduced. The sensor is designed for line-of-sight or same-room detection. Metal surfaces and certain types of glass will reflect or block the signal, limiting performance.

What is the output data format via the UART interface?

The module outputs structured data packets over UART at a configurable baud rate (default is often 115200 bps). The packet includes information such as target presence state, distance to the target, and energy values for moving and static targets. Protocol details are provided in the official developer documentation.

Is the sensor suitable for outdoor use?

No, the HLK-LD2412 is designed for indoor applications. It lacks a formal IP rating for water and dust resistance. For outdoor deployment, the module requires a protective, weatherproof enclosure that does not interfere with the 24GHz radar signal (avoid metallic enclosures).

Package Includes

  • 1 x Hi-Link HLK-LD2412 24GHz Human Presence Radar Sensor Module

Additional Information

Weight 0.01 kg
Dimensions 7 × 10 × 2 cm