Hi-link HLK-LD2461 Human Motion (5p) Tracking Radar Sensor Kit

The Hi-Link HLK-LD2461 is a comprehensive microwave radar sensor kit designed for human motion detection and proximity sensing. The kit includes the HLK-LD2461 radar module along with essential accessories, enabling fast and easy integration into development and deployment projects.

Using Doppler microwave radar technology, the HLK-LD2461 detects motion by analyzing frequency shifts in reflected signals from moving objects. Unlike PIR sensors, radar-based sensing works without line-of-sight and can detect movement through non-metallic materials such as walls and glass. This makes the module highly versatile for indoor and semi-outdoor applications.

With the ability to track up to 5 people (5p) and a practical detection range of 5–6 meters, the HLK-LD2461 Radar Sensor Kit is ideal for smart automation, security systems, robotics, and occupancy sensing where reliability and flexibility are critical.

Features of the Hi-Link HLK-LD2461 Radar Sensor Kit:-

1. Microwave Radar Technology:

   • The sensor uses Doppler radar technology, which detects motion by sending out microwave signals and measuring the frequency shift caused by moving objects. This technology enables reliable, non-contact detection that works through barriers like walls and glass.

2. Operating Frequency:

   • The module operates at 2.45 GHz, a frequency commonly used in radar and wireless communication systems. This allows the sensor to detect motion effectively while minimizing interference from other electronic devices.

3. Detection Range:

   • The HLK-LD2461 sensor has a detection range of up to 5 to 6 meters (approximately 16 to 20 feet), which makes it suitable for a variety of motion detection applications in both indoor and outdoor environments.

4. Low Power Consumption:

   • The radar sensor operates at a low voltage of 5V DC, consuming minimal power, which makes it ideal for battery-powered projects or energy-efficient systems, such as IoT devices or smart home automation.

5. Digital Output:

   • The sensor outputs a digital signal (HIGH when motion is detected, LOW when no motion is detected), making it compatible with microcontrollers like Arduino, Raspberry Pi, or any system that accepts digital inputs.

6. Non-contact Motion Detection:

   • Unlike PIR (Passive Infrared) sensors, which require line-of-sight, the HLK-LD2461 radar sensor can detect movement through walls, glass, and other non-metallic materials, which adds a layer of flexibility and versatility to its applications.

7. Adjustable Sensitivity:

   • Some versions of the sensor allow you to adjust its sensitivity, which can help to reduce false positives or increase the detection range in specific environments.

8. Compact and Easy to Integrate:

   • The module is small and lightweight, making it easy to integrate into existing devices or enclosures. This is especially useful for DIY projects, home automation, and robotics.

Key Features

• Microwave Doppler radar technology for non-contact motion detection

• Multi-person tracking: detects up to 5 people simultaneously

• Works through non-metallic barriers (walls, glass, plastic)

• Detection range: approximately 5–6 meters

• Low power operation: powered by 5V DC

• Digital output: HIGH on motion detection, LOW otherwise

• Adjustable sensitivity (version dependent)

• Compact, lightweight module for easy integration

• Complete sensor kit for rapid prototyping and deployment

Technical Specifications

• Operating Frequency: 2.45 GHz (microwave band)

• Radar Technology: Doppler microwave radar

• Detection Type: Human motion & proximity

• Maximum Detection Range: ~5–6 meters

• Maximum Tracked Targets: Up to 5 persons

• Operating Voltage: 5V DC

• Output Signal: Digital (HIGH / LOW)

• Detection Method: Non-contact, radar-based

• Mounting: Compact PCB module

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

Applications

• Smart home automation (lighting, fans, appliances)

• Security and intrusion detection systems

• Robotics obstacle & human presence detection

• Automatic doors and gate control

• Office & public-space occupancy sensing

• Healthcare, elderly care & safety monitoring

• IoT-based motion and proximity solutions

Package Includes

• 1 × Hi-Link HLK-LD2461 Radar Sensor Module

• Accessories required for integration (as part of kit)