HLK-LD2410C 24GHz mmWave 5M Human Presence Radar Sensor Motion Module

The HLK-LD2410C 24GHz mmWave Radar Sensor is a cutting-edge module designed for high-sensitivity human presence detection. Utilizing FMCW radar technology, it identifies motion, micro-movements, and stationary states within a 5-meter range. This versatile sensor is optimized for indoor applications, providing real-time detection and customizable sensitivity through visual tools or Bluetooth. Its compact size, wide-angle detection, and robust signal processing make it perfect for smart lighting, security systems, and energy-efficient home automation projects. Featured By RoboticsBD.

Product Images are shown for illustrative purposes only and may differ from the actual product.

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Features:

1. Advanced Detection: Differentiates between motion, micro-motion, and stationary states.
2. Wide Sensing Range: Detects presence up to 5 meters with 0.75m distance resolution.
3. Customizable Parameters: Configurable sensitivity, distance, and unmanned delay time.
4. Versatile Output: Supports both GPIO and UART outputs.
5. Compact Design: Dimensions of 16x22mm for easy integration.
6. Durable and Stable: Functions well across varied environmental conditions.

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Applications:

1. Smart Lighting: Automatically turns lights on/off based on human presence.
2. Security Systems: Detects intrusions, lingering, and movement in restricted areas.
3. Energy Efficiency: Automates appliances like TVs and air conditioners for power saving.
4. Public Displays: Activates advertising screens when people approach.
5. Safety Systems: Monitors high-risk areas for unauthorized entry or potential hazards.

Module Benefits:

1. LD2410 human body sensing module adopts 24GHz millimeter wave radar sensor technology. Compared with other solutions, it has obvious advantages in human body sensing applications.
2. In addition to being sensitive to moving human bodies, it can also sensitively sense static, micro-moving, sitting and lying human bodies that cannot be identified by traditional solutions.
3. It has good environmental adaptability, and the sensing effect is not affected by the surrounding environment such as temperature, brightness, humidity and light fluctuations.
4. It has good shell penetration and can be hidden in the shell to work without opening holes on the surface of the product, which improves the aesthetics of the product.
5. It can flexibly configure the farthest sensing distance and the sensitivity on each distance door to achieve flexible and fine personalized configuration.

Working current

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Please allow 5% measuring deviation due to manual measurement.

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Documentation:

1. Datasheet

Module Dimension or size

Pin definition:

Installation conditions:

1. Confirm the minimum installation clearance

If the radar needs to be installed with a casing, the casing must have good wave-transmitting properties at 24GHz, and cannot contain metal materials or materials that have a shielding effect on electromagnetic waves.

2. Installation Environment Requirements

This product needs to be installed in a suitable environment. If it is used in the following environments, the detection effect will be affected:

• There are non-human objects that are continuously moving in the sensing area, such as animals, continuously swinging curtains, large green plants facing the air outlet, etc.

• There is a large area of strong reflectors in the sensing area, and the strong reflectors will cause interference to the radar antenna.

• When installing on a wall, external interference factors such as air conditioners and electric fans at the top of the room need to be considered

3. Precautions during installation

• Try to ensure that the radar antenna is facing the area to be detected, and the surrounding area of the antenna is open and unobstructed

• To ensure that the installation position of the sensor is firm and stable, the shaking of the radar itself will affect the detection effect

• Make sure that there is no movement or vibration on the back of the radar. Due to the penetrating nature of radar waves, the back lobe of the antenna signal may detect moving objects behind the radar. Metal shielding cover or metal backplane can be used to shield the radar back lobe and reduce the influence of objects on the back of the radar

• The theoretical distance accuracy of radar can be accurate to 0.15 meters, which is the result obtained through special algorithm processing based on the physical resolution of 0.75 meters. Due to the differences in the size, state, and RCS of the target, the target distance accuracy will fluctuate; at the same time The maximum distance will also fluctuate slightly

Bluetooth instructions:

* Install software

Currently the APP supports Android and IOS platforms, you can download it from this link: https://www.pgyer.com/Lq8p (Android) You can also go to major app stores to search for "HLKRadarTools" and install it.

* Instructions

Open the app, and the app searches for nearby radar devices. The broadcast name of the device is "HLK-LD2410B_xxxx" (xxxx is the last four digits of the mac address). After the module is successfully connected, you can view the radar information, or debug and save the parameters.

The use distance of the APP should not exceed the Bluetooth signal range (within 4 meters)

The process of modifying the radar parameters of the Bluetooth APP is the same as that of the PC host computer tool.

* Turn on bluetooth again

The Bluetooth function of LD2410C is enabled by default, and Bluetooth can be turned off or turned on through the serial port protocol (see LD2410B serial port communication protocol.pdf). If the bluetooth has been turned off, or the serial port cannot be used, the bluetooth can be turned on again after the module is powered off and then powered on for more than 5 times within 2~3s.

Package Includes:

1 x HLK-LD2410C 24GHz mmWave 5M Human Presence Radar Sensor Motion Module

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