The Hi-Link LD2420 24GHz Radar Sensor Module Kit Combo is a complete high-precision human presence detection package designed for smart automation, IoT, and intelligent control systems. Based on FMCW (Frequency Modulated Continuous Wave) radar technology, it accurately detects both moving and stationary human targets within a range of up to 8 meters (wall-mounted) or 5 meters (ceiling-mounted). The kit includes all essential accessories for immediate setup and integration with microcontrollers or embedded systems. Featuring real-time UART communication and a digital HIGH/LOW output, the LD2420 Combo provides reliable, low-power, and privacy-friendly presence sensing that surpasses conventional PIR sensors. Compact in design and capable of operation in a wide temperature range, this module is ideal for home automation, healthcare monitoring, industrial safety, and intelligent occupancy analytics. Featured By RoboticsBD.
Product Images are shown for illustrative purposes only and may differ from the actual product.
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Features:
Complete Kit Combo: Includes LD2420 module with connection cables or adapter board for easy installation.
FMCW Radar Technology: High-precision detection for both motion and micro-motion human targets.
Extended Range: Detects up to 8m (wall-mounted) and 5m (ceiling-mounted) accurately.
Fast Response Time: Real-time data processing at 10Hz refresh rate.
Wide Coverage Angle: ±60° sensing range ensures reliable area monitoring.
Low Power Consumption: Operates efficiently at 3.3V with only ~50mA current draw.
Dual Output Options: Supports UART communication and digital HIGH/LOW output.
Compact Form Factor: Small 20×20mm PCB fits into any embedded application.
Environment-Resistant Design: Operates from -40°C to +85°C for all indoor conditions.
Enhanced Performance: Provides ±0.35m distance accuracy and 0.7m resolution.
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Applications:
Smart Home Automation: Automate lights, HVAC, or alarms based on occupancy.
Office and Retail Systems: Optimize workspace lighting and power usage.
Healthcare and Elderly Care: Detect patient presence or inactivity in real-time.
Security Systems: Improve motion sensing accuracy in restricted areas.
Industrial Automation: Monitor worker presence for safety compliance.
IoT and Analytics: Integrate into smart platforms for data-driven occupancy tracking.
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| General Specifications |
| Product Model | Hi-Link LD2420 Combo |
| Frequency Band | 24 – 24.25GHz (FCC/CE Compliant) |
| Radar Type | FMCW (Frequency Modulated Continuous Wave) |
| Detection Range (Wall) | Up to 8m (6m for micro-motion) |
| Detection Range (Ceiling) | Up to 5m (4m for micro-motion) |
| Distance Accuracy | ±0.35m |
| Resolution | 0.7m |
| Sensing Angle | ±60° |
| Operating Voltage | 3.0 – 3.6VDC |
| Output Voltage | 3.3V Logic Level |
| Current Draw | ~50mA |
| Data Refresh Rate | 10Hz |
| Communication Protocol | UART (Baud Rate: 256000) |
| Output Type | UART + Digital HIGH/LOW |
| Dimensions (mm) | ~20 × 20 |
| Operating Temperature Range | -40°C to +85°C |
| Kit Contents | LD2420 Module + Adapter/Connection Cables |
| Mounting Options | Wall or Ceiling |
| Application Area | Human Presence Detection, IoT, Automation |
| Compliance | FCC and CE Certified |
| Shipment Weight | 0.0098 kg |
| Shipment Dimensions (cm) | 7 × 4 × 2 |
Please allow 5% measuring deviation due to manual measurement.
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Documentation:
Pin Description:
- OT1: UART TX pin (Transmit data)
- RX: UART RX pin (Receive data)
- OT2: Digital output pin (HIGH = Human detected, LOW = No detection)
- GND: Ground
- 3V3: Supply voltage (3.0 – 3.6VDC)
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How to Use:
Power Supply:
- Connect the 3V3 pin to a 3.0 – 3.6VDC power source and the GND pin to ground.
Communication Setup:
- Use the UART interface (TX and RX pins) to communicate with a microcontroller or computer.
- Configure the communication protocol using the default baud rate of 256000.
Digital Output Monitoring:
- Monitor the OT2 pin for HIGH/LOW signals to detect human presence without UART communication.
Installation:
- For wall-mounted applications, set the sensor at an appropriate angle for maximum detection range (up to 8 meters).
- For ceiling-mounted setups, install the sensor at a height of up to 5 meters.
Integration and Testing:
- Integrate the sensor into your system and use the provided tools and resources to calibrate and monitor performance.
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Package Includes:
1 x Hi-Link LD2420 24GHz Radar Sensor Module Kit Combo
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