Ai-Thinker Rd-03L_V2 Low-Power 24GHz Human Presence Radar Sensor

The Ai-Thinker Rd-03L is the ultimate solution for energy-efficient motion sensing. Unlike standard radar modules that require constant mains power, the Rd-03L is an Ultra-Low Power module designed specifically for battery-operated and solar-powered applications.

Industry-Leading Energy Efficiency

Powered by the ICL1112 millimeter-wave SoC, this module achieves an incredibly low power consumption of just 55μA, with an average working current of less than 100uA (at 1Hz reporting). This makes it possible to run smart detection systems on coin cell or AA batteries for extended periods.

No Compromise on Performance

Despite its low power usage, the Rd-03L delivers powerful performance. It uses 24GHz FMCW technology to detect moving, micro-moving, and static human bodies up to 8 meters away. It also features a “No Blind Zone” design, effectively sensing targets as close as 0.2 meters.

Key Features

• Battery Optimized: Ultra-low power consumption (μA-Class) suitable for wireless, battery-powered setups.

• Advanced Chipset: Equipped with the ICL1112 sensor chip for high-sensitivity detection.

• Long Range: Detects human presence up to 8 meters with a wide ±60° angle.

• Zero Blind Spots: Proximity induction starts at just 0.2m.

• Smart Config: Visual tools allow you to configure distance intervals, trigger thresholds, and unattended delay times.

• Easy Integration: Standard 20x20mm size with 2.54mm DIP pins and UART/GPIO support.

Technical Specifications

Feature	Specification
Model	Rd-03L (Low Power)
Chipset	ICL1112
Average Current	< 100uA (@ 1Hz)
Power Consumption	~55 μA
Max Sensing Range	8 Meters
Blind Zone	None (Detects from 0.2m)
Frequency	24 GHz (ISM Band)
Package	20mm x 20mm (DIP)
Best For	Battery/Solar Powered Devices

Typical Application Scenarios

• Smart Doorbells: Battery-operated video doorbells that wake up only when someone approaches.

• Solar Security: Outdoor motion sensors powered by small solar panels.

• Portable Electronics: Wearables or portable gadgets requiring presence detection.

• Remote Monitoring: Sensing in locations where running power cables is difficult.

Please download the datasheet here.

Important Product Disclaimer

Please note that the product information provided on our website may not be entirely accurate as it is collected from various sources on the web. While we strive to provide the most up-to-date information possible, we cannot guarantee its accuracy. We recommend that you always read the product labels, warnings, and directions before using any product. Product images are shown for illustrative purposes only and may differ from the actual product.

Note

The actual product may vary in slight variation in electronic components/marking/resemblance with the image shown depending upon quantity availability. Images are for representation only.

Related Radar and UWB Products

Compare this module with related radar sensors, mmWave modules and development boards available from TechyTron.

• Ai-Thinker Rd-03_V2 24GHz mmWave Human Presence Radar Sensor
• Ai-Thinker Rd-03E 24GHz Radar Ranging and Gesture Sensor Module
• Ai-Thinker Rd-03H 24GHz Human Presence Radar Sensor – Up to 10m
• Browse all Radar and UWB modules

Downloads and Documentation

Use these manufacturer or reference documents to verify specifications, wiring, communication protocol, firmware support and installation requirements before designing your system.

• Ai-Thinker Rd-03 series documentation
• Ai-Thinker radar module hub
• TechyTron Radar and UWB category

Documents may be updated by the manufacturer. Always confirm critical details with the latest official documentation before production use.

Product Disclaimer

Images are for representation only. Actual product appearance, PCB marking, connector style, antenna layout, colour, pin-header configuration or included accessories may vary depending on the available production batch. Product description information listed here is collected from different internet sources, manufacturer pages, datasheets and reference documents, and may contain mistakes or become outdated. Always verify critical electrical, mechanical, firmware and safety details from the latest official manufacturer documentation before design, production or field installation.

Radar, mmWave and UWB sensing performance depends on firmware, configuration, power supply quality, installation height, antenna direction, enclosure material, target size, target movement, reflections, interference, line-of-sight and surrounding environment. Distance, angle, accuracy and current values are reference values unless explicitly guaranteed by the latest manufacturer datasheet for the exact supplied revision.