Hi-Link LD2461 Human Presence Radar Sensor Motion Module

The Hi-Link LD2461 Human Presence Radar Sensor Motion Module is a 24GHz millimeter wave radar device designed for precise human perception. It incorporates two 1-engine 2-receiver millimeter wave radar chips, high-performance microstrip antennas, a high-performance MCU, and auxiliary circuits. Operating within the 24.00GHz to 24.25GHz frequency range, this module is ideal for detecting multiple movements, micro movements, or stationary human bodies in various environments such as homes, offices, and hotels.

Specifications of Hi-Link LD2461 Human Presence Radar Sensor Motion Module

• Operating Voltage (VCC): 5.0V

• Operating Current (ICC): 260mA - 400mA

• Operating Temperature (TOP): -40°C to 85°C

• Storage Temperature (TST): -40°C to 85°C

• Dimensions: 35 x 50 mm

• Screw Hole Size: 1.7 mm

Detection Angle and Distance

• Perceived Distance of Stationary Targets: 5 m

• Sitting Position Micro Motion Perception Distance: 6 m

• Perceived Distance of Moving Targets: 8 m

• Number of Supported Trajectories: 5 pp

• Range Accuracy: 0.1 m

• Ranging Resolution: 0.75 m

• Angle Measurement Accuracy: 2°

• Angle Measurement Resolution: 15°

• Horizontal Action Angle: -45° to 45°

• Pitch Angle: -25° to 25°

RF Performance

• Operating Frequency: 24.0 GHz - 24.25 GHz

• Maximum Sweep Bandwidth: 0.25 GHz

• Maximum Equivalent Omnidirectional Radiation Power: 13 dBm

Electrical Performance

• Working Voltage (VCC): 5.0V

• Working Current (ICC): 260mA - 400mA

• Working Temperature (TOP): -40°C to 85°C

• Storage Temperature (TST): -40°C to 85°C

Main Functions and Performance of Hi-Link LD2461 Human Presence Radar Sensor Motion Module

Motion Detection

• Motion Perception Distance: ≤ 8 meters (normal range of motion)

• Motion Trigger Time: ≤ 0.5s

• Accuracy: ≥ 99%

Human Presence Detection (Respiratory Detection)

• Perceived Distance of Stationary Human Body: ≤ 6 meters

• Unmanned Detection Maintenance Time: 15 seconds

• Accuracy: ≥ 95%

Population Statistics

• Detection Distance: ≤ 6 meters

• Number of Detections: ≤ 5 people

• Accuracy: ≥ 90% (3 people), ≥ 80% (5 people)

Direction Detection

• Identify the Entry and Exit, Left and Right, Front and Back Directions of the Human Body

• Detection Distance: ≤ 6 meters

• Accuracy: ≥ 95%

Trajectory Detection

• Identify the Movement Route of the Human Body within the Detection Area

• Support Multi-Person Trajectory (up to 5 people)

• Detection Distance: ≤ 6 meters

• Accuracy: ≥ 90%

Pin Definition of Hi-Link LD2461 Human Presence Radar Sensor Motion Module