HLK-LD2450 24GHz MmWave

LD2450 mmWave Radar Module – Real-Time Trajectory & Presence Tracking

The LD2450 is an advanced 24 GHz FMCW mmWave radar module with built-in trajectory detection algorithms. With a single module you can measure distance, angle, and velocity of moving objects—enabling true position tracking in addition to simple presence detection. Perfect as an upgrade for the CeilSense (replacing the basic LD2412) or as a replacement module in the UltimateSensor series.

Features

• Real-Time Trajectory Data
  Detects objects up to 8 m away, with a field of view of ±60° (azimuth) and ±35° (tilt), and distance accuracy of ±0.15 m.
• Advanced FMCW Technology
  Operates in the 24–24.25 GHz band with a 250 MHz sweep bandwidth for crystal-clear measurements.
• UART Output
  ASCII data over a 4-pin serial interface (256 000 baud), easily integrated with ESPHome, ESP32, Raspberry Pi, or other microcontrollers.
• Compact Form Factor
  PCB measures just 15 × 40 mm, with a standard 1.5 mm 4-pin header.
• Low Power Consumption
  5 V supply (typically < 200 mA), easily powered via USB-C adapter or PoE converter.
• Future-Proof
  Firmware updates for new detection modes and direct Home Assistant integration.

Applications

• CeilSense Upgrade
  Replace the standard LD2412 in your in-ceiling sensor for precise position and motion tracking.
• UltimateSensor Module
  Add true position tracking to your home monitoring for advanced automations.
• General IoT Projects
  Ideal for smart security, presence tracking, fall detection, motion analytics, and robotics.

Note: When using the LD2450 instead of the LD2412 in the CeilSense:

• You switch from simple yes/no presence detection to 3-person tracking.
• The module runs noticeably warmer—consider this when evaluating temperature readings.
• The detection angle is significantly narrower than the LD2412, especially in ceiling installations.