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Home / Computer Hardware, Monitors & Peripherals / Original HLK-LD2410B-P Human Presence Radar Module Sensor with Heartbeat Detection and Bluetooth

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Operating Frequency 24GHz ISM Band
Detection Range 0.5m to 5m
Communication Interface UART TTL & Bluetooth
Supply Voltage 5V DC
Operating Current Typical 45mA
Antenna Type Onboard PCB Antenna
Protocol Standard UART Protocol
Dimensions 25mm x 25mm x 2mm
Operating Temperature -40°C to +85°C
Certifications CE, FCC, RoHS Compliant

5 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for Smart Lighting

Replaced my PIR sensors with these. The ability to detect stationary presence is a game changer for my office lights.

A

Anonymous

Mar 10, 2026

Rating: 5/5

Much better than PIR

No more lights going off while I'm reading. Detection is very sensitive to micro movements.

A

Anonymous

Feb 21, 2026

Rating: 5/5

Reliable UART connection

Integrated easily with my ESP32 project. Stable data output and consistent presence flags.

A

Anonymous

Feb 13, 2026

Rating: 4/5

Good value genuine module

Works as expected with ESPHome. Calibration took some time but the Bluetooth app helps.

A

Anonymous

Feb 10, 2026

Rating: 4/5

Solid performance

Genuine product. Range is accurate to specs. Would recommend for automation enthusiasts.

5 FAQ

Q: How do I configure the sensitivity?

A: You can use the official Android app via Bluetooth to adjust sensitivity and detection zones.

Q: Does it require external antennas?

A: No, it comes with an onboard PCB antenna ready for use.

Q: What is the maximum detection distance?

A: The maximum detection range is approximately 5 meters depending on environmental conditions.

Q: Can this monitor heart rate for health purposes?

A: While it detects micro-movements, it is not a medical device and should not be used for health monitoring.

Q: Is this compatible with ESPHome?

A: Yes, this module is fully supported by ESPHome using the UART component.

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