Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	LD2410B
Detection Technology	24GHz Millimeter Wave Radar
Communication Protocol	Bluetooth 5.0 BLE
Max Detection Range	6 Meters
Light Sensor	Integrated Photosensitive Resistor
Operating Voltage	5V DC
Interface Type	UART / GPIO
Beam Angle	±60 Degrees
Dimensions	40mm x 20mm x 3mm
Application Scenario	Smart Home Automation & Lighting Control

6 reviews

Anonymous

Mar 29, 2026

Rating: 5/5

Best presence sensor I've used

Finally, a sensor that doesn't turn off the lights while I'm reading at my desk. The micro-motion detection is impressive. The build quality feels sturdy as well.

Anonymous

Mar 27, 2026

Rating: 4/5

Great sensitivity, minor setup learning curve

The millimeter wave technology works much better than traditional PIR sensors. It took me a little while to understand the UART protocol documentation, but once configured, it has been rock solid.

Anonymous

Mar 11, 2026

Rating: 5/5

Excellent value for money

For the price, you cannot beat the performance. The range is consistent up to about 5 meters in my testing, which matches the specs closely. Integration with ESP32 was straightforward.

Anonymous

Mar 03, 2026

Rating: 4/5

Good but needs clear line of sight

Works great in open rooms. I noticed the detection drops if there is a thick wooden door in the way, which is expected for radar, but worth noting for placement planning.

Anonymous

Mar 02, 2026

Rating: 5/5

Perfect for smart lighting projects

This sensor is incredibly accurate at detecting human presence even when the person is standing still. The Bluetooth configuration via the app made setting up detection zones very easy. Highly recommended for Home Assistant users.

Anonymous

Mar 02, 2026

Rating: 5/5

Reliable and stable

I have installed five of these in my office. They distinguish between people and moving objects like fans perfectly. The photosensitivity feature is a nice bonus for automatic day/night mode switching.

5 FAQ

Q: What is the power consumption of this module?

A: The module typically operates at 5V with a current consumption of approximately 30mA to 50mA during active scanning, making it suitable for most standard microcontroller projects.

Q: Can this sensor detect breathing or very slight movements?

A: Yes, the LD2410B uses millimeter wave radar technology capable of detecting micro-movements such as chest expansion from breathing, ensuring lights stay on even when you are stationary.

Q: Does it work through glass or thin plastic covers?

A: Yes, 24GHz radar waves can generally penetrate non-metallic materials like glass, thin plastic, or wood, allowing you to hide the sensor behind a decorative cover.

Q: Can I integrate this directly with Home Assistant?

A: Absolutely. Many users integrate this sensor using ESPHome or custom MQTT scripts. The UART output provides clear presence and distance data that is easy to parse.

Q: Is there an official mobile app for configuration?

A: Yes, Hi-Link provides a dedicated Android and iOS app that connects via Bluetooth to configure detection ranges, sensitivity levels, and output delays without needing to write code initially.

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