LD1125H 24GHz mmWave human presence radar sensor module top view showing gold antenna patches and blue PCB

LD1125H 24GHz mmWave Human Presence Radar Sensor Module (Pre-Soldered)

Name: LD1125H 24GHz mmWave Human Presence Radar Sensor Module (Pre-Soldered)
Brand: ShillehTek
SKU: 4B239
Price: 19.99 USD
Availability: InStock

SKU 4B239

$19.99 USD Shipping & tax calculated at checkout

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LD1125H 24GHz mmWave human presence radar sensor module detects occupancy, motion, and subtle body movement for smart home automation, security, robotics, Arduino, ESP32, Raspberry Pi.

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Overview

Product Overview

The LD1125H 24GHz mmWave Human Presence Radar Sensor Module is a compact human presence radar sensor designed to detect occupancy and motion more reliably than basic PIR sensors by using 24GHz millimeter-wave signals to identify presence, movement, and subtle body motion. Built around the LD1125H for smart home automation, lighting control, security devices, robotics, and interactive electronics, this 24GHz mmWave radar helps trigger actions only when a person is actually present. It is well suited for prototyping and embedded integration in Arduino, ESP32, Raspberry Pi, and other microcontroller-based projects where accurate indoor presence detection is needed. The header pins ship pre-soldered, so it works out of the box with no soldering required.

Questions & answers

Frequently asked questions

Does this sensor work with Arduino and Raspberry Pi?

It is intended for Arduino, ESP32, Raspberry Pi, and other microcontroller-based projects. Your project still needs compatible wiring and software support for reading the module’s output in your chosen development environment.

Does it require soldering before use?

Yes. The header pins ship pre-soldered, so no soldering is required before connecting it to a compatible controller or breadboard wiring setup. This is useful for prototyping and quick embedded testing.

What electrical details should I check before wiring?

Use the module only with wiring that matches the board’s labeled power, ground, and signal pins. Confirm the required supply voltage and logic-level compatibility with Arduino, ESP32, or Raspberry Pi before connecting it.

What projects is this mmWave sensor good for?

It is designed for indoor human presence detection in projects such as smart lighting, home automation, security devices, robotics, and interactive electronics. The 24GHz mmWave radar can detect presence, movement, and subtle body motion.

Is it better than a basic PIR sensor?

Yes, it can be a better fit than a basic PIR sensor when the goal is detecting actual human presence, not just obvious motion. It uses 24GHz millimeter-wave sensing to identify occupancy and subtle body movement.

Have other questions?

Chat with our US-based team — we usually reply fast.

What's included