Ai-Thinker Technology

Trace: Rd-03 Module

Rd-03 Module

Rd-03 Module

I. Overview

Rd-03 is a radar module developed by Shenzhen Ai-Thinker Technology Co., Ltd., which is equipped with Sidian's S3KM1110 chip
S3KM1110 is an integrated microcontroller mmWave sensor SoC based on FMCW radar transceiver technology. It operates in the K-band at 24 GHz with a modulation bandwidth of up to 1 GHz per single-frequency sweep. Use FMCW frequency modulation continuous wave to detect the target in the set space. Combined with radar signal processing, high-sensitivity motion detection and micro-motion detection are realized.
The Rd-03 module can sense whether there is a moving or micro-moving human body in the area, and realize real-time detection results. A visual configuration tool is provided to easily configure the sensing distance range, sensing sensitivity in different intervals and unmanned delay time, etc.

2. Module Features


  1. The radar antenna supports 1 reception and 1 transmission, with narrow antenna beam, high resolution, wide frequency band, and strong anti-interference ability.
  2. The farthest sensing distance of the radar is up to 6.5 meters.
  3. Large radar detection angle, coverage up to ±60 degrees.
  4. Ultra-small module size: 20*20mm, plug and play, real-time reporting of detection results.
  5. High sensitivity, accurate ranging, and wide detection range.
  6. The intelligent parameter adjustment of the radar can be realized through the serial port, which is convenient and fast.
  7. Support various installation methods such as ceiling hanging and wall hanging.

Application scenario:

  1. Smart home: Perceive the existence and distance of the human body, report the monitoring results, and intelligently control home appliances to operate on demand;
  2. Smart security: sensor access control, sensor alarm, trigger linkage application with camera, etc.
  3. Smart lighting: identify and sense the human body, and accurately detect the position, which can be used in public places or home lighting equipment such as sensor lights, bulb lights, table lamps, mirror lights, etc.;
  4. Intelligent business: Interval sensing, to identify the approach or departure of the human body within the set distance interval; light up the screen in time, and keep the device always on when the human body is present;
  5. New energy charging/parking monitoring facilities: can trigger charging pile screen, parking space monitoring, wireless charging to prevent human intrusion, etc.

3. Specifications

Rd-03 Specification: CN EN

4. Secondary development information

Secondary development SDK source address:

Factory firmware (firmware number: 2088):Firmware download

Rd-01 module usage guide blog :link

Visual configuration tool download:Tool download

5. Hardware package

Rd-01 hardware package(include PADS9.5 and ASC):Click to download

6. Contact us

Shenzhen Ai-Thinker Technology Co., Ltd
Room 403,408-410, Building C, Huafeng Intelligence Innovation Port, Gushu, Xixiang, Baoan District, Shenzhen China 518126
Business cooperation:
Official website:
Official Forum: