Description

HLK-LD2402 Human Presence Sensor

Accurate Human Detection with 24GHz mmWave Radar Technology

The HLK-LD2402 is a compact, high-performance static human presence sensor, designed for precision detection of motion, micro-movements, and occupancy. Leveraging 24GHz millimeter wave radar and intelligent signal processing algorithms, this sensor can accurately determine whether a person is present, even without significant movement.

Ideal for smart homes, commercial applications, and security systems, the HLK-LD2402 simplifies integration with its plug-and-play design, real-time detection capabilities, and flexible configuration via GPIO and UART interfaces.

Key Features

• Built-in Intelligent Algorithm: Includes advanced radar signal processing firmware for motion and micro-motion detection.

• Ultra-Compact Size: Only 20mm x 20mm, perfect for space-constrained projects.

• Plug-and-Play: Pre-loaded with default human detection configuration.

• Reliable 24GHz ISM Band: FCC and CE compliant, with global spectrum compatibility.

• Flexible Power Options: Operates on both 3.3V and 5V (3.0–3.6V & 4.5–5.5V supported).

• Low Power Consumption: Average working current of just 50mA.

• Adjustable Detection Range: Up to 10 meters for motion detection with ±60° coverage.

• Customizable Settings: Easily configure detection zones, trigger/hold thresholds, and unmanned delay reporting.

• Robust Interference Rejection: Accurately isolates sensing area, ignoring activity outside defined zones.

• Versatile Mounting: Supports ceiling, wall, and surface installations.

Applications

• Smart Homes: Automate lighting, HVAC, or appliances based on real-time presence sensing.

• Security Systems: Enhance access control, door intercoms, and electronic peepholes.

• Commercial Use: Enable screens or devices only when users are nearby.

• Public Lighting: Activate and control lighting in public areas with precise human presence detection.

Technical Overview

The HLK-LD2402 uses FMCW (Frequency Modulated Continuous Wave) radar combined with a proprietary sensing algorithm to provide real-time updates on human presence. Powered by an integrated millimeter wave SoC and onboard MCU, it delivers exceptional accuracy in diverse environments.

With support for visual configuration tools, users can quickly tailor detection parameters to fit their project needs — making it ideal for rapid development and scalable deployment.