1.  Radardetection based on FMCW FM continuous wave signal
2.  Measuring distance up to 15m
3.  Highlyaccurate continuous measurement with an error of +/-5mm
4.  Antenna-3dB Beam Angle 100° Horizontal, 80° Tilt
5.  Support SPI, Uart, I2C standard communication interface
6.  Compactsize, 35.3*35.3mm, row of pins plug connection method
7.  Flexibility to add lenses to change the antenna angle
8.  Unaffected by temperature, humidity, noise, airflow, dust, light and other environmental influences

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1. Measuring distance up to 15m
2. Highly accurate continuous measurement with an error of +/-5mm
3. Antenna -3dB Beam Angle 100° Horizontal, 80° Tilt

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By operating in the 79 GHz high-frequency radar band, the HLK-LD7901B achieves millimeter-level ranging accuracy, far superior to ultrasonic or low-frequency radar sensors. Its narrow beam design provides excellent anti-interference capability, allowing reliable operation even in complex or noisy industrial environments.

The module is highly integrated, featuring an onboard digital signal processor (DSP) and controller that implement advanced radar signal-processing algorithms. With low power consumption, stable performance, and a serial communication interface, the HLK-LD7901B is easy to integrate into water tanks, reservoirs, sewage systems, and industrial liquid-level monitoring solutions.

Key Features

• 79GHz millimeter-wave radar technology
• Millimeter-level measurement accuracy
• Narrow beam design for strong anti-interference performance
• Long-distance ranging capability
• Highly integrated design with DSP & controller
• Advanced radar signal-processing algorithms
• Low power consumption
• Stable and reliable performance
• Easy integration via serial communication protocol
• Non-contact measurement – no corrosion or contamination

Technical Specifications

• Operating Frequency: 79 GHz (mmWave band)
• Detection Principle: Millimeter-wave radar level measurement
• Measurement Accuracy: Millimeter-level precision
• Beam Type: Narrow beam (high anti-interference)
• Signal Processing: Integrated DSP & controller
• Interface: Serial communication protocol
• Power Consumption: Low-power design
• Measurement Type: Non-contact liquid / water level detection

(Refer to the datasheet for exact electrical parameters, pin configuration, and installation guidelines.)

Applications

• Water tank level monitoring
• Industrial liquid level measurement
• Reservoir and dam water level detection
• Sewage and drainage system monitoring
• Environmental and flood monitoring systems
• Smart water management solutions

Package Includes

• 1 × Hi-Link HLK-LD7901B 79GHz Water Level Radar Sensor Module

CLICK HERE TO DOWNLOAD DATASHEET

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1. 60GHzmillimeter-wave radar sensors;
2. antennaFOV:120degreeshorizontally , 120 degrees vertically 120degrees;
3. Not affected by temperature, humidity, sound, dust, light, etc., suitable for harsh environments;
4. It can realize presence detection and respiratory and heart rate monitoring;
5. Maximum detection distance 1.5m, only supports one person detection;
6. GeneralUARTcommunication interface, providing communication protocol

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Unlike PIR sensors that rely on heat signatures, the HLK-LD6002C provides non-contact sensing and can detect motion through non-metallic materials such as glass, plastic, and thin walls. This makes it highly versatile for installations where traditional sensors struggle. Its compact form factor, low power operation, and digital output simplify integration into smart lighting, HVAC control, security systems, robotics, and automated access solutions.

Key Features

• 60GHz millimeter-wave radar technology
• Non-contact fall detection, motion & presence sensing
• Works through non-metallic barriers (glass, plastic, walls)
• Detection range: up to ~6 meters (environment dependent)
• Low power operation: typically 5V DC
• Digital output: HIGH on detection, LOW when idle
• Adjustable sensitivity to reduce false positives
• Compact & lightweight module for easy integration
• Reliable performance across lighting and temperature variations

Technical Specifications

• Operating Frequency: 60GHz (mmWave band)
• Radar Technology: Microwave Doppler radar
• Detection Type: Fall detection, motion, proximity & presence
• Maximum Detection Range: ~6 meters
• Operating Voltage: 5V DC
• Output Type: Digital (HIGH / LOW)
• Detection Method: Non-contact radar sensing
• Sensitivity Adjustment: Supported
• Module Size: Approx. 30 mm × 30 mm (typical)

(Refer to the datasheet for exact electrical parameters, pin configuration, and installation guidance.)

Applications

• Smart lighting & automation systems
• Security and intrusion detection
• Occupancy detection for HVAC & energy management
• Automatic doors & touch-free access control
• Robotics and automation
• Smart buildings & IoT safety solutions

Package Includes

• 1 × Hi-Link HLK-LD6002C 60GHz Fall Detection Radar Sensor Module

Features and Specifications:

1. Technology:- The HLK-LD6002C operates using microwave radar technology based on the Doppler effect, which detects changes in the frequency of the reflected microwave signals from moving objects.

2. Operating Frequency: – The sensor typically works at a 2.45 GHz frequency, a common microwave frequency used in radar sensors. This frequency ensures minimal interference and reliable motion detection over medium-range distances.

3. Detection Range: – The HLK-LD6002C sensor has a typical detection range of up to 6 meters depending on the environment and object size. It is suitable for a variety of applications, such as occupancy sensing, motion-triggered lighting, and security systems.

4. Low Power Consumption: – The module is designed with low power consumption in mind, typically running on 5V DC. This makes it ideal for use in battery-operated or energy-efficient systems, particularly in IoT and smart home devices.

5. Output Type: – The module has a digital output signal that is either high or low, depending on whether motion is detected. When motion is detected, the output goes high (usually 3.3V or 5V), and when no motion is detected, it goes low (0V). This digital output can be used to trigger actions such as turning on lights, sending alerts, or activating other systems.

6. Non-contact Sensing: – Since the HLK-LD6002C uses microwave radar, it can detect motion or presence through walls, glass, and other non-metallic materials, making it more versatile than infrared sensors which require a line of sight to the object.

7. Compact and Lightweight: – The module is small and lightweight, typically designed for easy integration into various systems. Its compact size (around 30 mm x 30 mm) makes it easy to fit into a range of applications like smart home devices, security systems, or robotics.

CLICK HERE TO DOWNLOAD DATASHEET

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Using mmWave radar technology, the HLK-LD6002C detects human movement and posture changes by analyzing reflected radar signals. Unlike camera-based or PIR solutions, this radar sensor works without line-of-sight, does not rely on heat signatures, and preserves user privacy. It can also detect movement through non-metallic materials such as glass or plastic.

With low power consumption, adjustable sensitivity, and a compact form factor, the HLK-LD6002C Radar Sensor Kit is especially suitable for fall detection in elderly care, smart safety systems, occupancy-based automation, and IoT deployments.

Key Features

• 60GHz millimeter-wave radar technology
• Non-contact fall detection & presence sensing
• Works through non-metallic barriers (glass, plastic, thin walls)
• Detection range: up to ~6 meters (environment dependent)
• Low power operation: typically 5V DC
• Digital output: HIGH on detection, LOW when idle
• Adjustable sensitivity to minimize false alarms
• Compact, lightweight module
• Privacy-friendly sensing (no camera or audio)
• Complete sensor kit for quick prototyping and deployment

Technical Specifications

• Operating Frequency: 60GHz (mmWave band)
• Radar Technology: Millimeter-wave Doppler radar
• Detection Type: Fall detection, motion & presence
• Maximum Detection Range: ~6 meters
• Operating Voltage: 5V DC
• Output Signal: Digital (HIGH / LOW)
• Detection Method: Non-contact radar sensing
• Sensitivity Adjustment: Supported
• Form Factor: Compact PCB radar module

(Refer to the datasheet for detailed electrical parameters, pin configuration, and installation guidance.)

Applications

• Fall detection for elderly care & assisted living
• Smart lighting & automation systems
• Security & intrusion detection
• Occupancy detection for HVAC & energy management
• Automatic doors & touch-free access systems
• Robotics & autonomous sensing
• IoT-based safety and monitoring solutions

Package Includes

• 1 × Hi-Link HLK-LD6002C 60GHz Fall Detection Radar Sensor Module
• Accessories included as part of the sensor kit

Features and Specifications of the Hi-Link HLK-LD6002C Radar Sensor Kit:-

1. Microwave Radar Technology: – The HLK-LD6002C module is based on microwave radar, utilizing the Doppler effect to detect motion. It emits a microwave signal, and when the signal reflects off an object or person, the change in frequency is detected and processed to determine movement.

2. Operating Frequency: – The sensor operates at 2.45 GHz, which is a common frequency for microwave radar modules. This frequency provides excellent detection accuracy and ensures that the sensor works effectively in various conditions.

3. Detection Range – The HLK-LD6002C radar sensor typically has a detection range of up to 6 meters. The exact range may vary depending on environmental conditions such as the size of the object or the presence of interference.

4. Low Power Consumption: – This sensor is designed for low power operation (typically 5V DC), making it ideal for battery-powered devices or energy-efficient systems. This is particularly useful for IoT projects or smart home applications where power efficiency is critical.

5. Digital Output: – The HLK-LD6002C provides a digital output signal, which switches between HIGH (3.3V or 5V) and LOW (0V) based on motion detection. The digital signal is easy to interface with microcontrollers like Arduino, Raspberry Pi, and other devices.

6. Non-contact Detection: – One of the main advantages of this sensor is its ability to detect motion through walls, glass, and other non-metallic surfaces. Unlike infrared sensors (PIR), the radar sensor doesn’t require line-of-sight to detect motion, making it more versatile in many applications.

7. Adjustable Sensitivity: – The kit includes options to adjust the sensitivity of the sensor, allowing users to customize its response based on the specific application. This helps reduce false positives from environmental factors like small moving objects (fans, pets, etc.).

8. Compact and Easy to Integrate – The HLK-LD6002C sensor is small and lightweight, which makes it easy to incorporate into various projects, whether for home automation, security systems, occupancy detection, or robotics.

Applications of the Hi-Link HLK-LD6002C Radar Sensor Kit:-

1. Smart Lighting: – Integrate the radar sensor into a smart lighting system that turns lights on or off based on detected movement. The sensor can detect motion even through walls or windows, providing more flexibility in lighting control.

2. Security Systems: – Use the sensor in a security system to detect intruders. When motion is detected, the system can trigger an alarm, send notifications, or activate cameras.

3. Occupancy Detection: – Install the sensor in rooms to detect occupancy and automatically adjust heating, ventilation, and air conditioning (HVAC) systems, helping to improve energy efficiency.

4. Automatic Doors: – The radar sensor can be used in automatic doors to detect approaching individuals and trigger the door-opening mechanism, without the need for physical touch or line-of-sight.

5. Robot and Autonomous Vehicle Applications: – The sensor can be integrated into robots or autonomous vehicles for obstacle avoidance and motion detection, allowing the system to detect moving objects or people.

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Unlike PIR sensors that depend on heat and line-of-sight, the HLK-LD6002B provides non-contact detection and can sense motion through non-metallic materials such as glass, plastic, and thin walls. Its compact form factor, adjustable sensitivity, and digital output make it easy to integrate into smart lighting, HVAC control, security systems, robotics, and automatic access solutions.

Designed for energy-efficient systems, the module operates on 5V DC and supports continuous, always-on sensing with minimal power draw—ideal for IoT and smart building deployments.

Key Features

• 60GHz millimeter-wave radar technology
• 3D presence, motion & proximity detection (non-contact)
• Works through non-metallic barriers (glass, plastic, walls)
• Detection range: up to ~6 meters (environment dependent)
• Low power operation: 5V DC
• Digital output: HIGH on detection, LOW when idle
• Adjustable sensitivity to reduce false positives
• Compact & lightweight module for easy integration
• Reliable performance in varying light and temperature conditions

Technical Specifications

• Operating Frequency: 60GHz (mmWave band)
• Radar Technology: Microwave Doppler radar
• Detection Type: Motion, proximity & presence detection
• Maximum Detection Range: ~6 meters
• Operating Voltage: 5V DC
• Output Signal: Digital (HIGH / LOW)
• Detection Method: Non-contact radar sensing
• Sensitivity Adjustment: Supported
• Form Factor: Compact PCB module

(Refer to the datasheet for exact electrical parameters, pin configuration, and tuning guidance.)

Applications

• Smart lighting & automation systems
• Security and intrusion detection
• Occupancy detection for HVAC & energy management
• Automatic doors and access control
• Robotics obstacle & presence sensing
• IoT-based smart building solutions

Package Includes

• 1 × Hi-Link HLK-LD6002B 60GHz 3D Presence Radar Sensor Module

Features and Specifications of the HLK-LD6002B Radar Sensor Module:

1. Technology:

   • The HLK-LD6002B sensor uses microwave radar technology, specifically based on the Doppler effect. When the emitted microwave signals are reflected off moving objects, a frequency shift occurs, which is then detected by the sensor to determine the motion.

2. Operating Frequency:

   • The module operates at a frequency of 2.45 GHz, a standard frequency for microwave radar sensors, ensuring minimal interference and stable performance.

3. Detection Range:

   • The HLK-LD6002B sensor typically has a detection range of up to 6 meters, though the actual range can depend on environmental factors such as object size, movement speed, and surrounding conditions.

4. Low Power Consumption:

   • It operates with a low power consumption of around 5V DC, making it suitable for battery-powered devices and energy-efficient applications, including IoT projects and smart home systems.

5. Digital Output:

   • The sensor provides a digital output signal, where the output is HIGH (3.3V or 5V) when motion is detected and LOW (0V) when no motion is detected. This makes it easy to interface with microcontrollers like Arduino, Raspberry Pi, or other digital systems.

6. Non-contact Sensing:

   • The HLK-LD6002B can detect motion through walls, glass, and other non-metallic materials. Unlike infrared (PIR) sensors, which require line-of-sight, microwave radar sensors can detect motion even if objects or barriers are in the way.

7. Compact Design:

   • The module is compact and lightweight, making it suitable for integration into various systems, whether for home automation, security systems, robotics, or automatic door controls.

8. Sensitivity:

   • The sensor typically allows for adjustable sensitivity, giving users the ability to control how responsive the sensor is to motion. This helps in reducing false positives from small or unintended movements (e.g., small pets or fans).

CLICK HERE TO DOWNLOAD DATASHEET

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Using microwave Doppler radar technology, the HLK-LD6002B detects movement by analyzing frequency shifts in reflected radar waves. Unlike PIR sensors, radar-based detection works without relying on heat and can sense motion through non-metallic materials such as glass, plastic, or thin walls. This makes it highly reliable in complex indoor environments.

With low power operation, adjustable sensitivity, and compact design, the HLK-LD6002B Radar Sensor Kit is ideal for smart lighting systems, occupancy-based energy management, security solutions, and robotic sensing.

Key Features

• 60GHz millimeter-wave radar technology
• 3D presence & motion detection (non-contact)
• Works through non-metallic barriers (glass, plastic, walls)
• Detection range: up to ~6 meters
• Low power consumption: operates on 5V DC
• Digital output: HIGH on motion detection, LOW otherwise
• Adjustable sensitivity to reduce false positives
• Compact & lightweight design
• Complete sensor kit for quick integration

Technical Specifications

• Operating Frequency: 60GHz (mmWave band)
• Radar Technology: Microwave Doppler radar
• Detection Type: Motion, proximity & presence detection
• Maximum Detection Range: ~6 meters
• Operating Voltage: 5V DC
• Output Signal: Digital (HIGH / LOW)
• Detection Method: Non-contact radar sensing
• Sensitivity Adjustment: Supported
• Form Factor: Compact PCB radar module

(Refer to the datasheet for exact electrical parameters, pin configuration, and tuning details.)

Applications

• Smart lighting and automation systems
• Security & intrusion detection
• Occupancy detection for smart buildings
• Energy-efficient HVAC and lighting control
• Automatic doors and access systems
• Robotics obstacle & environment detection
• IoT-based presence sensing solutions

Package Includes

• 1 × Hi-Link HLK-LD6002B 60GHz 3D Presence Radar Sensor Module
• Accessories included as part of the sensor kit

Features and Specifications of the Hi-Link HLK-LD6002B Radar Sensor Kit:

1. Microwave Radar Technology:

   • The HLK-LD6002B sensor utilizes microwave radar based on the Doppler effect to detect motion. When a moving object reflects the microwave signal emitted by the sensor, the sensor detects the change in frequency, indicating movement.

2. Operating Frequency:

   • The sensor operates at a frequency of 2.45 GHz, which is common for microwave radar sensors. This frequency helps provide accurate detection and reduces interference from other devices.

3. Detection Range:

   • The HLK-LD6002B sensor has an effective detection range of up to 6 meters (20 feet), depending on the size and speed of the moving object and environmental factors.

4. Low Power Consumption:

   • Operating at 5V DC, the sensor is highly energy-efficient, making it suitable for battery-powered or low-power applications. This is particularly useful for IoT devices or projects that require minimal power consumption.

5. Digital Output:

   • The sensor outputs a digital signal—HIGH (3.3V or 5V) when motion is detected and LOW (0V) when no motion is detected. This allows easy integration with microcontrollers like Arduino, Raspberry Pi, or other systems that accept digital inputs.

6. Non-Contact Detection:

   • Unlike infrared (PIR) sensors, the HLK-LD6002B radar sensor is capable of detecting motion through non-metallic barriers like walls and glass. This makes it suitable for more complex environments where other types of sensors may not work effectively.

7. Compact Design:

   • The HLK-LD6002B module is compact and lightweight, making it easy to incorporate into various applications, from home automation systems to security alarms and robotic projects.

8. Adjustable Sensitivity:

   • The kit often provides options to adjust sensitivity levels. This allows users to fine-tune the sensor’s responsiveness to motion, reducing false positives and improving accuracy for the intended application.

CLICK HERE TO DOWNLOAD DATASHEET

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• Smart home applications According to the respiratory heart rate measurement, to achieve home empowerment
• Health control Respiratory heart rate data is monitored in real time
• Wisdom health the elderly breathing heart rate monitoring, abnormal immediately report to the police

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Using microwave radar technology, the HLK-LD6002 detects subtle movements and frequency shifts caused by human motion and physiological signals. Unlike traditional PIR sensors, radar sensing does not rely on heat and can work through non-metallic materials such as glass or plastic, ensuring consistent performance in various environments.

With its compact design, low power operation, and adjustable sensitivity, the HLK-LD6002 Radar Sensor Kit is well suited for smart home automation, security systems, robotics, occupancy monitoring, and healthcare-focused applications.

Key Features

• 60GHz millimeter-wave radar technology for high-sensitivity detection
• Non-contact sensing for motion, presence & heart-rate–related micro-movements
• Works through non-metallic barriers (glass, plastic, walls)
• Detection range: up to ~6 meters
• Low power consumption: operates on 5V DC
• Digital output: HIGH on detection, LOW otherwise
• Adjustable sensitivity to reduce false triggers
• Compact and lightweight module
• Complete radar sensor kit for easy prototyping

Technical Specifications

• Operating Frequency: 60GHz (mmWave band)
• Radar Technology: Microwave / Doppler radar
• Detection Type: Motion, presence & vital-sign micro-motion
• Maximum Detection Range: ~6 meters
• Operating Voltage: 5V DC
• Output Signal: Digital (HIGH / LOW)
• Detection Method: Non-contact radar sensing
• Sensitivity Adjustment: Supported
• Form Factor: Compact PCB radar module

(Refer to the datasheet for detailed electrical parameters, pin configuration, and tuning instructions.)

Applications

• Smart home automation (lighting, appliances, HVAC)
• Occupancy detection in smart buildings
• Security & intrusion detection systems
• Robotics obstacle & proximity sensing
• Automatic doors and gate control
• Healthcare & wellness monitoring (non-contact)
• IoT-based motion and presence detection systems

Package Includes

• 1 × Hi-Link HLK-LD6002 60GHz Radar Sensor Module
• Accessories included as part of the sensor kit

Features of the Hi-Link HLK-LD6002 Radar Sensor Kit:-

1. Microwave Radar Technology:

   • The sensor uses microwave radar based on the Doppler effect. The radar emits microwave signals and detects the frequency shift caused by moving objects, making it a reliable and non-contact solution for motion detection.

2. Operating Frequency:

   • The module operates at 2.45 GHz, a commonly used frequency for radar-based motion sensors, ensuring stable performance and reduced interference.

3. Detection Range:

   • The HLK-LD6002 module can detect motion up to 6 meters (approximately 20 feet), making it suitable for various applications where mid-range detection is required.

4. Low Power Consumption:

   • It operates at 5V DC, which makes it suitable for battery-powered applications. The low power consumption ensures energy efficiency, ideal for IoT and other portable devices.

5. Digital Output:

   • The module provides a digital output (HIGH when motion is detected, LOW when no motion is detected), which is easy to interface with microcontrollers like Arduino, Raspberry Pi, or any system with digital inputs.

6. Non-contact Sensing:

   • Unlike PIR (Passive Infrared) sensors, which require direct line-of-sight to detect motion, the HLK-LD6002 radar sensor can detect movement through barriers like walls, glass, and other non-metallic materials.

7. Adjustable Sensitivity:

   • The module allows you to adjust its sensitivity to tailor it to your environment and the type of detection needed. This can help to reduce false positives or improve the sensor’s responsiveness.

8. Compact and Easy to Integrate:

   • The radar sensor module has a small form factor, making it easy to integrate into various DIY and commercial projects.

CLICK HERE TO DOWNLOAD DATASHEET

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