Hi-Link HLK-LD2460 24GHz Trajectory Detection Radar Sensor

The HLK-LD2460 operates on a 5V DC power supply and draws approximately 260mA during normal operation. It is crucial to use a stable 5V power source capable of supplying at least 300mA to ensure reliable performance and avoid communication errors.

The sensor communicates via a standard UART (serial) interface using TTL logic levels (0V/5V). You can connect its TX and RX pins directly to a microcontroller's UART pins. Configuration commands, such as setting baud rates (9600-256000 bps) or defining detection zones, are sent as specific hexadecimal frames over this serial connection, as detailed in the official protocol documentation.

The sensor defines three detection modes: 'Static' detects completely stationary human presence up to 5m. 'Micro-Motion' detects subtle movements like breathing or typing up to 6m. 'Moving' detects standard walking or gesturing motion up to the maximum 8m range. The sensor can report data for all these states depending on the configured output mode.

The 24GHz radar signal can penetrate non-metallic materials like drywall, plastic, or glass with some attenuation, but detection range and accuracy will be reduced. It is primarily designed for line-of-sight or through-thin-barrier applications. Metallic objects or thick, dense materials will completely block the signal.

The HLK-LD2460 has a horizontal field of view of ±45 degrees and a vertical (pitch) field of view of ±25 degrees. Within this cone, it can track the X-Y coordinates of up to five separate moving targets simultaneously, with a distance resolution of 0.75m and an angle resolution of 15 degrees.