RD-04 Human Presence Sensor Radar is a motion-sensing module based on X-band radar developed by Ai-Thinker. The module uses Phosense’s XBR818 chip, and the centre frequency is 10.525GHz. The module design adopts fixed frequency, directional transmitting and receiving antenna (1T1R), integrates the functions of medium frequency demodulation, signal amplification and digital processing, and has the ability of delay setting and adjustable perception range.
The Motion Detection Radar has the advantages of no wall penetration, anti-interference, small size, good suppression effect of clutter and high harmonic, high stability and consistency. In the module pulse power supply mode, the power consumption is at the micro-ampere level. The module is mainly aimed at low-cost and low-power consumption applications. The module is suitable for embedded concealed installation, not affected by temperature/humidity, lampblack, water mist, etc.
The Human Presence Sensor Radar can be widely used in all kinds of lamps, such as bulb lamp, downlight, ceiling light, etc.; power application, such as visual doorbell, cat eye, door locks, low-power cameras, intelligent litter box, pet feeder, etc.
Specifications:
- Model: Rd-04
- Package: DIP
- Size: 15.0*15.0mm
- Antenna: Onboard PCB antenna
- Frequency range: 10.275-10.775GHz
- Operating temperature -40℃ ~ 85℃
- Storage environment: -40℃ ~ 125℃, 90%RH
- Power supply range: The power supply voltage is 3.0V ~ 3.6V, and the power supply current is ≥100mA.
- Support interface: IIC
- Available IO quantity: 2
Features:
- The radar supports the 10.525G frequency band
- Integrated digital signal detection and processor, real-time output of moving target
- detection results
- Support IIC bus configuration
- Support pulse power supply mode
- Support integrated photosensitive drive
- Support a variety of installation methods such as top hanging and wall hanging. The longest radar induction range is up to 6.5 meters
- The radar detection Angle is large, and the coverage range can reach ± 50 degrees
- Typical application scenarios
Package Included:
1 x Ai-Thinker RD-04 Human Presence Sensor Radar 10.525Ghz Microwave Radar For Motion Detection 3-3.6V Powered Human Presence Sensor Radar
Video
Technical Specifications
| Brand | Ai- Thinker |
|---|---|
| Model | RD-04 |
| Frequency | 10.525Ghz |
| Color | Red |
| SKU | AI6112 |
| Weight | 0.0 kg |
| Availability | In Stock |
Applications & Use Cases
The Ai-Thinker RD-04 Human Presence Sensor Radar 10.525Ghz Microwave Radar For Motion Detection 3-3.6V Powered Human Presence Sensor Radar is a versatile ai thinker esp modules used across a wide range of applications including WiFi-enabled IoT devices, smart home sensors, web servers, mesh networks, and wireless data logging.
Common use cases:
- Connecting an Arduino project to WiFi
- Building a smart plug or switch
- Creating a wireless sensor network
This product is ideal for IoT developers, home automation enthusiasts, and embedded engineers.
Technical Tip: ESP32 supports both WiFi and Bluetooth. ESP8266 is WiFi-only but more affordable. Both are programmable via Arduino IDE or ESP-IDF.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
- Genuine Ai- Thinker product sourced from authorized channels
Vaishali Shetty (verified owner) –
Great quality Ai-Thinker RD-04 Human Presence Sensor Radar. Flashed with ESPHome and it works beautifully.
Dev Trivedi (verified owner) –
Excellent Ai-Thinker RD-04 Human Presence Sensor Radar! WiFi connectivity is strong and stable. Perfect for IoT projects.
Yogesh Mukherjee (verified owner) –
Great quality Ai-Thinker RD-04 Human Presence Sensor Radar. Flashed with ESPHome and it works beautifully.
Kunal Menon (verified owner) –
Outstanding Ai-Thinker RD-04 Human Presence Sensor Radar! Programmed it with Arduino IDE. All features work as documented.
Jayesh Bose (verified owner) –
Great Ai-Thinker RD-04 Human Presence Sensor Radar. OTA updates work perfectly. Using 5 of these around my house.
Saurabh Saini (verified owner) –
Excellent Ai-Thinker RD-04 Human Presence Sensor Radar! WiFi connectivity is strong and stable. Perfect for IoT projects.
Shivam Rao (verified owner) –
Okay Ai-Thinker RD-04 Human Presence Sensor Radar. Took time to figure out the pin mapping but functional.
Uday Bajaj (verified owner) –
Great Ai-Thinker RD-04 Human Presence Sensor Radar. OTA updates work perfectly. Using 5 of these around my house.
Gaurav Saxena (verified owner) –
Outstanding Ai-Thinker RD-04 Human Presence Sensor Radar! Programmed it with Arduino IDE. All features work as documented.
Manish Agarwal (verified owner) –
Excellent Ai-Thinker RD-04 Human Presence Sensor Radar! WiFi connectivity is strong and stable. Perfect for IoT projects.
Vikram Jain –
This Ai-Thinker RD-04 Human Presence Sensor Radar is amazing for home automation. Connected all my smart devices easily.
Akshat Pillai (verified owner) –
Superb Ai-Thinker RD-04 Human Presence Sensor Radar! Using it for my weather monitoring station. WiFi range is impressive.
Kapil Mehta (verified owner) –
This Ai-Thinker RD-04 Human Presence Sensor Radar is amazing for home automation. Connected all my smart devices easily.
Swati Mittal (verified owner) –
Decent Ai-Thinker RD-04 Human Presence Sensor Radar. Had to install CP2102 drivers but works fine after that.
Shivam Parekh (verified owner) –
Average Ai-Thinker RD-04 Human Presence Sensor Radar. WiFi drops occasionally but works for basic projects.
Eshan Menon (verified owner) –
Superb Ai-Thinker RD-04 Human Presence Sensor Radar! Using it for my weather monitoring station. WiFi range is impressive.
Uday Shetty (verified owner) –
Love this Ai-Thinker RD-04 Human Presence Sensor Radar. Built a smart switch with it. Works with Home Assistant perfectly.
Prateek Khurana (verified owner) –
This Ai-Thinker RD-04 Human Presence Sensor Radar is amazing for home automation. Connected all my smart devices easily.
Aanya Singh (verified owner) –
Decent Ai-Thinker RD-04 Human Presence Sensor Radar. Had to install CP2102 drivers but works fine after that.
Simran Verma (verified owner) –
Excellent for smart home projects. This Ai-Thinker RD-04 Human Presence Sensor Radar connects reliably to my router.
Bharat Bhat (verified owner) –
Excellent Ai-Thinker RD-04 Human Presence Sensor Radar! WiFi connectivity is strong and stable. Perfect for IoT projects.
Sneha Trivedi (verified owner) –
Perfect for my IoT project. This Ai-Thinker RD-04 Human Presence Sensor Radar has excellent WiFi performance.
Himanshu Rao –
Decent Ai-Thinker RD-04 Human Presence Sensor Radar. Had to install CP2102 drivers but works fine after that.
Tushar Batra –
Great Ai-Thinker RD-04 Human Presence Sensor Radar. OTA updates work perfectly. Using 5 of these around my house.
Bharat Pandey (verified owner) –
Outstanding Ai-Thinker RD-04 Human Presence Sensor Radar! Programmed it with Arduino IDE. All features work as documented.
Utkarsh Rajan (verified owner) –
Average Ai-Thinker RD-04 Human Presence Sensor Radar. WiFi drops occasionally but works for basic projects.
Jayesh Khurana (verified owner) –
This Ai-Thinker RD-04 Human Presence Sensor Radar is amazing for home automation. Connected all my smart devices easily.
Yashwant Patil (verified owner) –
Great quality Ai-Thinker RD-04 Human Presence Sensor Radar. Flashed with ESPHome and it works beautifully.
Chirag Choudhury (verified owner) –
Excellent Ai-Thinker RD-04 Human Presence Sensor Radar! WiFi connectivity is strong and stable. Perfect for IoT projects.