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Home / Computer Hardware, Monitors & Peripherals / Hi-Link 24GHz Millimeter Wave Radar LD2420 Human Micro-Motion Sensor Module Smart Sensor
Computer Hardware, Monitors & Peripherals

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Frequency 24GHz ISM Band
Power Supply 5V DC
Interface Type UART TTL
Detection Range 0.5m to 6m
Operating Temperature -20°C to 85°C
Module Dimensions 25mm x 25mm x 3mm
Communication Baud Rate 115200 bps
Antenna Type On-board PCB Antenna
Detection Capability Human Micro-Motion & Presence
Mounting Type PCB Pins / Connector

5 reviews

A

Anonymous

Apr 15, 2026

Rating: 5/5

Great value

Much cheaper than other 24GHz modules I found. Performance is solid.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Sensitive and reliable

Detects slight movements accurately. Integration with ESPHome was straightforward.

A

Anonymous

Feb 26, 2026

Rating: 5/5

Solid module

Using it for office occupancy tracking. Data output is consistent.

A

Anonymous

Feb 05, 2026

Rating: 5/5

Perfect for presence detection

Replaced my PIR sensors with this. No more lights turning off while I am sitting still.

A

Anonymous

Jan 25, 2026

Rating: 4/5

Good hardware, learning curve

The sensor works well but configuring the sensitivity took some trial and error.

5 FAQ

Q: Is this compatible with Arduino Uno?

A: Yes, you can connect via UART using digital pins.

Q: Is the cable included?

A: Please check the package options. Standard kit usually includes connectors.

Q: Can it detect motion through a wooden door?

A: It can penetrate thin non-metallic materials, but thick wood may reduce sensitivity.

Q: What software is needed for configuration?

A: We provide a PC tool available on our official website.

Q: Does it consume much power?

A: Average current consumption is around 60mA during operation.

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