Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Model Number	HLK-LD2410B-P
Detection Technology	24GHz MMW Radar
Connectivity	Bluetooth 5.0 BLE
Max Detection Range	Up to 6 meters
Operating Voltage	5V DC
Interface Type	UART / GPIO
Dimensions	38mm x 26mm x 3mm
Beam Angle	±45 degrees horizontal
Application Scenario	Smart Home, Lighting Control
Package Contents	1x Sensor Module, 1x Antenna

6 reviews

Anonymous

Mar 24, 2026

Rating: 5/5

Reliable presence detection

I replaced several PIR sensors with these. Unlike PIR, this actually detects when someone is sitting still reading a book. Highly recommended for bathroom lighting.

Anonymous

Mar 19, 2026

Rating: 4/5

Good range and accuracy

Works well up to the stated 6 meters. I noticed slight latency in reporting 'clear' status after leaving the room, but adjustable via the config tool.

Anonymous

Mar 17, 2026

Rating: 5/5

Best in class for 24GHz

The ability to distinguish between micro-movements like breathing and actual motion is a game changer. No more lights turning off while I'm working at my desk.

Anonymous

Mar 16, 2026

Rating: 5/5

Perfect for smart home automation

This radar module works flawlessly with my ESP32 project. The Bluetooth configuration app makes setting detection zones incredibly easy compared to older models.

Anonymous

Mar 14, 2026

Rating: 4/5

Great sensitivity, minor setup learning curve

The heartbeat detection is impressive and eliminates false positives from moving curtains. Took me a moment to understand the UART protocol documentation, but it works great now.

Anonymous

Mar 12, 2026

Rating: 5/5

Excellent value for money

Genuine Hi-Link module as described. The build quality is solid, and the antenna connection is secure. Integration with Home Assistant was straightforward.

5 FAQ

Q: What is the difference between this and the non-P version?

A: The '-P' suffix indicates this package includes the external PCB antenna. The core sensor functionality and firmware capabilities are identical to the standard LD2410B.

Q: Does this module require an external antenna?

A: Yes, the HLK-LD2410B-P comes with a separate PCB antenna that must be connected to the IPEX connector on the module for proper operation.

Q: Is this compatible with 3.3V logic microcontrollers?

A: The module operates on 5V input. While the RX pin is 5V tolerant, the TX pin outputs 5V logic, so a voltage divider is recommended when connecting to 3.3V MCUs like ESP8266.

Q: Can I configure the detection distance via Bluetooth?

A: Absolutely. You can use the official Hi-Link Android or iOS app to connect via BLE and adjust max distance, gating, and sensitivity settings wirelessly.

Q: Does it support multiple target tracking?

A: This specific model is optimized for single-target presence detection and heartbeat monitoring. For multi-target tracking, please consider our LD2450 series.

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