The HLK-LD2410B Human Presence Radar Module is a cutting-edge mmWave radar sensor designed to detect human presence, micro-motion, and breathing-level movement with exceptional precision. Ideal for smart home automation, IoT projects, security systems, lighting control, elderly monitoring, and energy-saving applications, this module uses 24GHz millimeter-wave radar technology to deliver stable performance in all lighting conditions.

Compared to traditional PIR sensors, the LD2410B provides higher sensitivity, false-trigger protection, and the ability to detect humans even when they remain still. It supports both UART and GPIO output modes, making it compatible with ESP32, ESP8266, Arduino, Raspberry Pi, and other microcontroller platforms.

Whether you're building a smart room occupancy system or a presence-aware automation device, the HLK-LD2410B is an excellent choice for accurate and reliable human detection in Bangladesh.

Key Features:

• ✔ 24GHz millimeter-wave radar technology

• ✔ Detects micro-motion and static human presence

• ✔ Works in dark, glare, fog, and indoor environments

• ✔ Supports UART communication + GPIO output

• ✔ Adjustable detection distance and sensitivity

• ✔ Extremely low false alarms vs PIR sensors

• ✔ Compatible with ESP32, Arduino, Raspberry Pi

• ✔ Wide 120° detection area

• ✔ Small size, easy integration into IoT devices

  Technical Specifications:

  Parameter	Details
  Model	HLK-LD2410B
  Technology	24GHz mmWave Human Presence Radar
  Detection Range	Up to 5–6 meters (configurable)
  Static Human Detection	Yes
  Micro-Motion Detection	Yes
  Output Interface	UART (3.3V), GPIO
  Operating Voltage	5V DC
  Communication Baud Rate	256,000 bps (default)
  Field of View	Horizontal 120°, Vertical 40°
  Operating Temperature	−20°C ~ +80°C
  Dimensions	Compact module design
  Applications	Smart home, IoT, lighting automation, security systems, human presence detection