Description:
Ai-Thinker RD-04 Human Presence Sensor Radar is a compact microwave radar sensing module designed for human presence and motion detection applications. Operating at 10.525GHz and powered by 3–3.6V, it provides a practical sensing solution for smart home systems, IoT devices, automation projects, and intelligent electronic applications.
Unlike conventional motion sensors that rely on passive infrared detection, microwave radar technology can be used to detect movement and presence through changes in the reflected microwave signal. The RD-04 is suitable for developers, makers, students, and engineers working on presence detection and smart sensing projects.
Specifications:
| Specification | Details |
|---|---|
| Brand | Ai-Thinker |
| Model | RD-04 |
| Product Type | Human Presence Radar Sensor |
| Radar Frequency | 10.525GHz |
| Technology | Microwave Radar |
| Operating Voltage | 3–3.6V |
| Detection | Human Presence & Motion |
| Application | IoT, Automation & Smart Sensing |
| Module Type | Radar Sensor Module |
| Suitable For | Embedded & Electronics Projects |
Features:
- Ai-Thinker RD-04 radar sensing module
- 10.525GHz microwave radar technology
- Designed for human presence detection
- Suitable for motion detection applications
- 3–3.6V operating power
- Compact sensor module
- Suitable for IoT applications
- Useful for smart home automation
- Supports presence-aware electronic systems
- Suitable for embedded projects
- Useful for intelligent sensing applications
- Suitable for automation and control systems
- Ideal for electronics prototyping
- Useful for makers and developers
- Low-voltage power operation
Applications:
- Human presence detection
- Motion detection
- Smart home automation
- IoT devices
- Intelligent lighting
- Occupancy detection
- Security systems
- Smart building systems
- Automatic control systems
- Embedded electronics
- Robotics projects
- Energy management systems
- Presence-aware devices
- Automation projects
- DIY radar sensing applications
Safety Precautions:
- Use a regulated 3–3.6V power supply.
- Check polarity before connecting power.
- Do not exceed the specified operating voltage.
- Avoid short circuits between power and ground.
- Disconnect power before changing wiring.
- Handle the module carefully to prevent ESD damage.
- Keep the module away from water and excessive moisture.
- Do not physically damage the radar sensing components.
- Test the sensor in an environment suitable for microwave radar operation.
- Follow applicable regulations and the manufacturer's instructions for RF equipment.
Frequently Asked Questions ( FAQs )
Q1. What is the Ai-Thinker RD-04?
The RD-04 is a microwave radar sensor module designed for human presence and motion detection.
Q2. What frequency does the RD-04 use?
The RD-04 operates at 10.525GHz according to the supplied product specification.
Q3. What is the operating voltage?
The specified operating voltage is 3–3.6V.
Q4. Can the RD-04 detect human presence?
Yes, it is designed for human presence detection and motion-sensing applications.
Q5. Is the RD-04 a PIR sensor?
No. It uses microwave radar technology, rather than passive infrared sensing.
Q6. Can it be used for smart home projects?
Yes, it is suitable for compatible smart home and automation applications.
Q7. Can this sensor be used in IoT projects?
Yes, it can be integrated into suitable IoT and embedded sensing systems.
Q8. What can the RD-04 be used to control?
With compatible electronics and control circuitry, it can be used as a presence or motion input for lighting, automation, and other systems.
Package Included:
1 × Ai-Thinker RD-04 Human Presence Sensor Radar Module
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