Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Frequency	24 GHz ISM Band
Detection Range	0.5m to 8m (Adjustable)
Communication Interface	UART (TTL Level)
Supply Voltage	5.0V ± 0.2V DC
Average Current Consumption	< 70 mA @ 5V
Beam Angle	±60° Horizontal / ±40° Vertical
Output Logic	High for Presence, Low for Absence
Configuration Method	PC Software via USB-to-TTL
Operating Temperature	-20°C to +85°C
Module Dimensions	26mm x 26mm x 3.5mm

6 reviews

Anonymous

Mar 27, 2026

Rating: 5/5

Superior to traditional PIR

Finally switched from PIR to millimeter-wave radar. The ability to detect stationary humans is a game changer for office occupancy monitoring. UART communication is stable and easy to parse.

Anonymous

Mar 21, 2026

Rating: 4/5

Solid performance, minor latency

Overall very satisfied. There is a slight delay (about 1-2 seconds) when declaring 'no presence' after leaving the room, but this is configurable. The build quality feels robust for industrial prototyping.

Anonymous

Mar 19, 2026

Rating: 4/5

Great value but needs careful calibration

For the price, this is an incredible sensor. Out of the box, it was a bit too sensitive to movement behind the wall, but after adjusting the gain settings in the PC tool, it works perfectly for my bathroom light automation.

Anonymous

Mar 16, 2026

Rating: 5/5

Compact and powerful

The form factor is very small, making it easy to hide inside enclosures. Detection through thin plastic covers works well. Highly recommended for anyone building advanced presence detection systems.

Anonymous

Mar 11, 2026

Rating: 5/5

Excellent sensitivity for smart home projects

This LD2410D module works flawlessly with my ESP32 setup. It detects even subtle movements like typing on a keyboard, which PIR sensors usually miss. The configuration software is intuitive and allows precise range tuning.

Anonymous

Mar 09, 2026

Rating: 5/5

Best budget mmWave sensor

I have tested several brands, and Hi-Link offers the best balance of cost and performance. The documentation is clear, and the community support for this specific chip is growing rapidly.

5 FAQ

Q: Can this sensor detect a person sitting still at a desk?

A: Yes, unlike PIR sensors, the LD2410D uses millimeter-wave radar to detect micro-movements such as breathing and chest expansion, allowing it to identify stationary humans reliably.

Q: Is the output voltage 3.3V or 5V compatible?

A: The module operates on a 5V supply, and the UART TX/RX pins are TTL level. While it runs on 5V, the logic levels are generally compatible with 3.3V microcontrollers like ESP32, but a level shifter is recommended for long-term stability.

Q: Does it work through a plastic ceiling tile?

A: Yes, 24GHz mmWave signals can penetrate non-metallic materials like plastic, drywall, and wood. However, detection range may be slightly reduced depending on the thickness and density of the material.

Q: What software is needed to configure the detection zones?

A: You need the official Hi-Link PC debugging software, which connects via a USB-to-TTL adapter. This allows you to set detection distance, gating areas, and sensitivity parameters.

Q: Can multiple sensors be used in the same room without interference?

A: Yes, you can use multiple units. To minimize interference, it is advisable to stagger their startup times or configure them to operate on slightly different frequency offsets if supported by the firmware version.

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