Hailingke 24G millimeter-wave radar LD2420 human body micro-motion and movement sensing module intelligent sensor--EngrWorld

HLK-LD2412 is a highly sensitive 24GHz human presence state sensing module developed by HI-LINK Electronics. Its working principle is to use FMCW frequency modulation continuous wave to detect human targets in the set space, combined with radar signal processing and precise human body sensing algorithms, to achieve high sensitivity human body presence state sensing, recognize human bodies in both moving and stationary states, and calculate auxiliary information such as target distance. This product is mainly used in indoor scenes to perceive whether there is movement or micro movement of the human body in the perception area, and to output real-time detection results. The farthest sensing distance can reach 9 meters, with a distance resolution of 0.75 meters. Provide visual configuration tools that can easily configure sensing distance range, sensing sensitivity in different intervals, and unmanned delay time to meet different specific application requirements.

Supports GPIO and UART outputs, plug and play, and can be flexibly applied to different intelligent scenarios and terminal products.

1.1. Features

Plug and play, simple assembly method
The farthest sensing distance can reach up to 9 meters, and the nearest and farthest detection distances can be configured
Large detection angle, with a coverage range of ± 75 degrees
Multi level intelligent parameter tuning to meet the needs of scene changes
Visual debugging and configuration tools
Compact and simplified, supporting multiple installation methods such as ceiling and wall mounting
24GHz ISM frequency band, certified by FCC and CE spectrum regulations
The ultimate cost-effective choice

1.2. Pin Definition

PIN picture (1)

PIN	Name	Function
OUT	Target state output	Default to detect human presence: output high level No human presence: output low level The output level can be configured through instructions
TX	Serial TX	Serial Tx pin
RX	Serial RX	Serial Rx pin
+5V	5V Power input	Power input 5V; Either 5V or 3.3V power supply is optional
3V3	3.3V Power input	Power input 3.3V; Either 5V or 3.3V power supply is optional
GND	Power ground	Power ground
G	Power ground	Power ground

LD2412-04

DIAGRAM-06

LD2412 DESCRIPTION-05

	Type	Description
	Product type	Radar Module
	Manufacturer	Shenzhen Hi-Link
	Brand	Hi-Link
	Package/specifications	20×20×20mm
	Sensor type	24GHz FMCW 低功耗人体感应雷达传感器（带蓝牙）
	Operation voltage (Vin)	3.3V
	Operation current	~50mA（0.05A）
	Port type	2.54mm 排针
	Operation temperature	-40℃~+85℃

Service declaration

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Supports seven days of returns without reason

If the delivery is lost, return is supported

If the delivery is damaged, return is supported

Free exchange within 90 days

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