SKU: SENS-2465
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Hi-Link HLK-LD2451 24GHz Speed Radar Sensor (10m~100m) - GPIO/UART Output

₹1,129.00 (Inclusive of all taxes)
Out of Stock

The Hi-Link HLK-LD2451 is a 24GHz FMCW radar sensor module designed for vehicle speed and distance detection up to 100 meters. It provides GPIO and UART outputs for easy integration with microcontrollers (Arduino, ESP32, STM32) and industrial PLCs, delivering real-time target speed, distance, and movement direction data.

Features

  • 24GHz FMCW (Frequency-Modulated Continuous Wave) radar for precise speed and distance measurement.
  • Extended detection range up to 100 meters for outdoor vehicle monitoring applications.
  • Configurable via mobile app for sensitivity, range, speed thresholds, and target direction.
  • Dual-output interface: GPIO for simple triggers and UART for detailed data streaming.
  • Certified for FCC and CE regulations in the 24GHz ISM band for compliant deployment.

Out of stock

Description

The HLK-LD2451 operates on the 24GHz ISM band using FMCW radar technology. This principle involves transmitting a frequency-modulated continuous wave and analyzing the frequency shift of the reflected signal to accurately calculate target distance and radial velocity. The module’s integrated DSP applies advanced algorithms to filter noise and distinguish moving targets, outputting processed data including speed, distance, and movement direction (approaching/receding).

Engineered for robust outdoor performance, the sensor is housed in a compact, shielded enclosure suitable for integration into traffic monitoring systems, smart parking solutions, and perimeter security. Its configurable parameters allow adaptation to various scenarios, from highway speed enforcement to automated gate control, ensuring reliable operation across changing environmental conditions.

Key Features

  • High-Sensitivity FMCW Radar: Delivers accurate speed and distance data for moving vehicles with advanced signal processing.
  • Long-Range Outdoor Sensing: Capable of detecting targets up to 100 meters away, ideal for road and perimeter applications.
  • Mobile Configuration Tool: Enables wireless tuning of detection thresholds, sensitivity levels, and output formats via a dedicated app.
  • Flexible Digital Outputs: Provides both GPIO for binary detection alerts and UART for streaming rich, parsed data packets.
  • Regulatory Compliance: Meets FCC and CE standards for the 24GHz ISM band, ensuring legal operation in relevant regions.
  • Compact and Shielded Design: Optimized footprint with EMI shielding for stable performance in electrically noisy environments.

Applications

  • Traffic speed monitoring and enforcement systems on roads and highways.
  • Smart parking lot occupancy detection and vehicle entry/exit sensing.
  • Perimeter security and intrusion detection for gated communities or industrial sites.
  • Automated gate and barrier control based on vehicle approach speed and distance.
  • Vehicle counting and traffic flow analysis for smart city infrastructure.

Technical Specifications

ManufacturerHi-Link
Model NumberHLK-LD2451
Sensor TypeFMCW Radar Sensor
Operating Frequency24 GHz
Detection Range10m ~ 100m
Measured ParametersSpeed, Distance, Movement Direction
Output InterfacesGPIO, UART
Configuration MethodMobile App (Bluetooth/Wi-Fi)
Regulatory CertificationsFCC, CE (24GHz ISM Band)
Operating VoltageTypically 3.3V or 5V DC (Check datasheet)
Dimensions (L x W x H)10 x 7 x 2 cm
Shipping Weight0.01 kg

Frequently Asked Questions

What is the operating voltage for the HLK-LD2451 radar sensor?

The module typically operates on 3.3V or 5V DC logic levels. It is crucial to consult the official Hi-Link datasheet for the exact voltage specifications and current requirements before connecting power to ensure stable operation and prevent damage to the sensor's internal circuitry.

How do I configure the detection range and sensitivity?

The sensor is configured via a dedicated mobile application provided by Hi-Link. Using Bluetooth or Wi-Fi, you can wirelessly connect to the module to adjust parameters such as the minimum/maximum sensing distance, speed thresholds, sensitivity levels, and the format of the data output via the UART interface.

What data does the UART output provide?

The UART (Serial) interface outputs parsed data packets containing real-time information for detected targets. This typically includes the target's distance (in meters), radial speed (in km/h or m/s), and movement direction (approaching or receding). The specific data frame structure and protocol are detailed in the manufacturer's communication protocol documentation.

Is this sensor suitable for outdoor use?

Yes, the HLK-LD2451 is designed for outdoor applications like traffic monitoring. Its 24GHz FMCW radar technology provides good performance in various weather conditions. However, for permanent installation, consider using a protective enclosure to shield the electronics from direct rain, extreme temperatures, and physical debris.

Package Includes

  • 1 x Hi-Link HLK-LD2451 24GHz Speed Radar Sensor Module

Additional Information

Weight 0.01 kg
Dimensions 10 × 7 × 2 cm