Hi-Link HLK-LD2410C 24GHz mmWave Sensor (5V UART Compatible)

Description

The HLK-LD2410C combines the powerful presence-sensing capabilities of the LD2410B with 5 V UART compatibility — making it a perfect choice for Arduino-based systems or any 5 V microcontroller.

It features the same high-precision radar sensing for motion and stationary presence, 8 configurable distance zones, and supports both UART and GPIO output. BLE configuration is available (BLE version only), enabling easy tuning of sensitivity and range parameters via mobile app or PC.

Recommended for smart building, home automation, and wall- or ceiling-mounted presence sensing where 5 V tolerance is important.

Specifications

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• Technology: FMCW 24GHz mmWave radar

• Detection Range: Presence up to 5 m, Motion up to 6–6.5 m

• Resolution: 8 zones (0.75 m each)

• Outputs: UART (5 V tolerant, 256000 baud), GPIO presence signal

• BLE Configuration: Available on BLE versions

• Supply Voltage: 5–12 V

• Logic Level Tolerance: 5 V

• Dimensions: 7 mm × 35 mm

• Angle Coverage: ±60°

• Configuration Tools: PC software and Android/iOS app

Use cases

• Turn lights on/off when someone enters or leaves a room

• Detect presence in a room even if the person is not moving

• Save power by putting devices to sleep when nobody’s around

• Wake up a screen or device when someone approaches

• Control fans, lights, or speakers with motion or presence

• Make your project react to someone sitting at a desk or lying in bed

• Trigger alerts or automations when someone enters a zone

• Detect people behind plastic or acrylic enclosures

• Replace PIR sensors for better accuracy and reliability indoors

• Build touchless controls for displays, doors, or gadgets

Comparison