Guidance for Hi-Link 24G Series Radar Modules
Human Presence Detection（24G Millimetre Wave Radar Module Series）
HLK modules for human presence detection include HLK-LD2412, HLK-LD2410B, HLK-LD2410C, HLK-LD2410S, HLK-LD2410S, HLK-LD2412, HLK-LD2410B, HLK-LD2410C and HLK-LD2410S.
Human presence radar module LD2412（High-precision long-distance）
LD2412 Human presence sensing radar module HLK-LD2412, purely domestic chip, new self-developed algorithms, the module's farthest sensing distance of up to 9 metres, the detection angle of ± 75 °, comes with BLE5.0 bluetooth, support APP to adjust the parameter.
LD2412 radar module sensing range is wider, sensing distance is farther, support the bottom noise detection and distance gate adjustment parameter.
Human presence radar module LD2410B（Radar Bluetooth All-in-One）
The HLK-LD2410B Human Presence Radar Module senses the presence of the human body at rest, in motion and in motion. The maximum sensing distance is up to 6 metres and the detection angle is up to ±60°. The module supports mobile phone APP (HLKRadarTools) to quickly adjust the reference. Support APP for OTA upgrade, comes with photosensitive firmware.
Human Presence Radar Module LD2410C（Radar Bluetooth All-in-One）
The size scheme of HLK-LD2410C is quite different from HLK-LD2410B, with the same function. HLK-LD2410C has a rectangular shape on the outside, with a size size of 16mmx22mm, and HLK-LD2410B module size is 7mmx35mm.
Presence Radar Module LD2410S（Ultra Low Power Consumption Human）
LD2410S LD2410S supports accurate sensing of human standing, micro-movement, movement and other states, close range 0.2 m sensing, no detection blind zone. The module's motion human body sensing distance up to 8m, wall mounted horizontal coverage angle ± 60 °.
The main feature of LD2410S is its low power consumption, which is as low as uA level and supports battery power.
Gesture Detection（24G Millimetre Wave Radar Module Series)
LD2411 The main feature of HLK-LD2411 radar module lies in sensing human body distance and gesture recognition, which fits perfectly with the usage scenario of smart toilet, helping to realise the functions of human body approaching to open the toilet automatically, gesture sensing to flush automatically and so on.
Micro Motion Detection（24G Millimetre Wave Radar Module Series）
The modules in the direction of HLK target trajectory detection applications contain the HLK-LD2420 and HLK-LD2420B products.
Micromotion Detection Radar Module LD2420(Low power consumption and low cost)
LD2420 The HLK-2420 radar module, with a compact size of only 20 mm × 20 mm, has a high degree of integration and saves design.
HLK-2420 radar module proximity 0.2 m sensing, no detection of blind zones; motion human body sensing up to 8 m. The module's sensing distance, and large detection angle, covering a range of ± 60 °.
Motion Detection Radar Module LD2420B(Single-digit price/performance ratio)
HLK-LD2420B supports motion and micro-motion body sensing with a coverage range of ±60°, a sensing distance of 0.2 m-8 m, and an ultra-small size of 7 mm x 35 mm.
The LD2420B module is commonly used in low-cost application scenarios, with a low price as low as about $8, making it very cost-effective.
Distance Detection（24G Millimeter Wave Radar Module Series）
HLK-LD2411S is a 24GHz range sensing radar module, the working principle is to use FMCW continuous wave to detect the target in the set space, combined with radar signal processing, accurate sensing algorithms, precise sensing of micro-motion/movement object distance and status information.
The module supports 0.2-3 metres of micro sensing and 3-6 metres of mobile sensing and real-time output of TTL serial data, can provide configuration tools to modify the sensing distance range, sensing sensitivity and delay time.
Target Track Detection（24G Millimetre Wave Radar Module Series）
The HLK modules in the direction of target track detection applications include the HLK-LD2450 and HLK-LD2461 products.
Target track radar module LD2450（3-Person Detection）
LD2450 HLK-LD2450 radar module integrates distance measurement, speed measurement and angle measurement, through the data output of distance, angle and speed, so as to realise accurate positioning of moving and micro-moving human body.
HLK-LD2450 radar module supports simultaneous detection of 3 moving targets, and in the APP tuning parameter, users can customise to turn on or off multi-person target detection according to their needs.LD2450 supports to view the parameters through the upper computer and APP.
Target Track Radar Module LD2461（5 People Counting）
LD2461 LD2461 radar module price is as low as double-digit, but at the same time, it achieves the perception of the presence of the human body within 6 metres, the number of people counting 5 people, >95% accuracy of the direction detection, real-time detection of the target's activity trajectory, ultra-high accuracy and ultra-functionality all in one.
Vehicle proximity detection（24G Millimetre Wave Radar Module Series）
LD2451 radar module is mainly used for outdoor detection of vehicle status, including sensing and outputting information such as distance, angle and speed between other vehicles and its own vehicle, and displaying it in real time on the upper computer and mobile phone APP.
HLK-LD2451 radar module can sense the movement status of 5 vehicles around within 100 metres, can cover 3 lanes, detection angle ±20°.
Liquid Level Detection（24G Millimetre Wave Radar Module Series）
LD2413 HLK-LD2413 radar module sensor adopts FMCW waveform, combined with MCU proprietary radar signal processing and built-in high-precision liquid level detection intelligent algorithms, to achieve accurate detection of the target distance in the specified area and real-time reporting results.
The detection range of the module is 0.15 m ~ 10 m, ranging accuracy of ± 3 mm, ultra-small size 44 mm x 36 mm ultra-small sensor size.
