Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Frequency | 24 GHz ISM Band |
| Detection Range | 0.5m to 12m (Adjustable) |
| Interface Protocol | UART / TTL |
| Supply Voltage | 3.3V DC ±5% |
| Current Consumption | < 40mA (Active Mode) |
| Antenna Type | Onboard PCB Patch Antenna |
| Beam Angle | Horizontal 80°, Vertical 60° |
| Supported Models | RD-01, RD-03, RD-04 |
| Operating Temperature | -20°C to +70°C |
| Dimensions | 25mm x 20mm x 3mm |
Anonymous
Mar 24, 2026
Rating: 4/5
Good value for money
Compared to other 24GHz modules on the market, this offers a great balance of price and performance. It struggles slightly with thick drywall, but works perfectly for line-of-sight indoor applications.
Anonymous
Mar 23, 2026
Rating: 5/5
Low power consumption verified
Measured the current draw myself and it matches the specs. Ideal for battery-powered devices if you implement a sleep mode strategy. The micro-motion feature is a game changer for security alarms.
Anonymous
Mar 21, 2026
Rating: 5/5
Perfect for smart home automation
I used the RD-03 model for a bedroom lighting project. The micro-motion detection is incredibly sensitive; it can detect breathing even when the person is completely still. Integration with my ESP32 was straightforward via UART.
Anonymous
Mar 16, 2026
Rating: 5/5
Reliable for occupancy counting
We deployed several RD-04 modules in our conference room. They accurately track entry and exit, helping us manage HVAC systems efficiently. The onboard antenna saves significant space on our custom PCBs.
Anonymous
Mar 06, 2026
Rating: 5/5
Excellent documentation support
As someone new to radar sensors, I found the datasheet and example code very helpful. The module detected my hand waving from 8 meters away during testing. Highly recommended for prototyping.
Anonymous
Mar 06, 2026
Rating: 4/5
Great sensitivity, needs tuning
The sensor works well out of the box, but I had to adjust the sensitivity registers to prevent false triggers from ceiling fans. Once tuned, it reliably detects presence without needing large movements.
Q: Can I daisy-chain multiple sensors on one UART bus?
A: Each sensor has a unique address that can be configured. While they share the physical bus, you must poll them individually or set them to different reporting intervals to avoid data collisions.
Q: Can this sensor detect a person sleeping without any movement?
A: Yes, the RD-03 and RD-04 models are specifically designed for micro-motion detection, capable of sensing chest expansion from breathing even when the subject is stationary.
Q: Is there an SDK available for Arduino integration?
A: Yes, we provide a library compatible with Arduino IDE that simplifies UART communication and parameter configuration for all supported RD series modules.
Q: Does the onboard antenna work through plastic enclosures?
A: Yes, 24GHz radar signals generally pass through non-metallic materials like plastic, wood, and glass with minimal attenuation. Avoid metal housings as they will block the signal.
Q: What is the maximum update rate for the detection data?
A: The standard output refresh rate is configurable via UART commands, typically ranging from 10Hz to 50Hz depending on your specific application requirements.
Wenxin Tang Calligraphy and Painting Felt - Ancient Art Series, Double-Sided Wool Felt with Leather Desk Mat for Calligraphy and Painting, Colorful Soft Stain-Resistant Felt for Brush Writing Practice, Traditional Chinese Painting Supplies
$32.30
Construction Backfill Ceramsite Lightweight for Bathroom Garage Roof Base Concrete Roof Sloping Gardening Planting
$430.00
Scented Candle Making Kit - DIY Tools Including Wax Melting Pot, Thermometer, Heating Stove, and Containers
$6.46
Stainless Steel Multi-Function Bathroom Storage Rack - Over-Toilet Shelf with Multi-Layer Floor Standing Cabinet for Washing Machine
$48.98
Variable Frequency Drive Safety Function Module FSO-12 Kit
$9,900.00
Wheel Lug Nuts Compatible with Ford Focus, Kuga, Mondeo, Escort, EcoSport, Everest
$59.50
Cardboard Box Wholesale Taobao No.10/12 Paper Box Packing Hard Small Carton Half-Height Postal Express Packaging Box Custom
$0.14
New 502 Super Glue Large Bottle, Instant Adhesive for Plastic, Paper, Furniture Repair, ABS, and Hardware
$5.18
Mushroom Stick Sponge Stamp Painting Set - Rotating Brush and Printing Tool for Kids' Art and Crafts
$3.32
Yijiayi Plastic Surgery: Eyebrow Transplant, Aesthetic Artistic Brow Planting for Sparse or Missing Brows
$6,780.00
Biliansheng Hair Transplant – No-Shave Technique for Eyebrows, Beard, Widow's Peak, and Sideburns; Aesthetic Design and Hair Restoration
$2.55
Oil Pastel Blending Stumps and Smudging Tools for Painting, Mixing, and Highlighting
$4.76
Jingyangge Calligraphy Wool Felt Arm Rest Pad, Mini Felt Mat for Chinese Painting, Inkstone Protector, Creative and Exquisite Practice Mat
$9.90
Concrete Mixing Plant Gantry Car Wash Platform, Shiji Runde Tunnel-Style Gantry Car Wash Machine
$20,000.00
Baohong Watercolor Paper Artist Grade 1/2/Full/Half Sheet, Student Grade 300g 100% Cotton Pulp, Rough/Medium/Fine Grain Roll
$33.00
Metal Garden Bed - Large Size Vegetable Planter for Balcony and Home Gardening
$1,033.00
Custom Travertine Stone Signage with Natural Marble 3D Lettering and Spherical Characters for Cafes, Clothing Stores, and Studios
$170.00
CANDLE.LAB | Realistic Cookie Series DIY Aromatherapy Plaster Candle Diffuser Handmade Silicone Mold
$12.00
Zhao Mengfu Calligraphy Copybook - Running Script 'Qingyun Zhi', Red-Traced Practice Paper for Beginners in Calligraphy
$15.80
Aesthetic Street Scene Watercolor Line Art for Coloring, 16K Landscape Watercolor Coloring Book, Painting Book, Cotton Pulp Watercolor Album
$15.80
Warehouse Nitrogen Sealing Generator - High-Purity Food-Grade PSA Skid-Mounted Container Equipment
$959.00
Ransheng UV Resin Gel, UV Crystal Glue for Gemstones, Ear Cuff Sealing, Dried Flower Molds, DIY Quick-Dry UV Epoxy
$44.00
Dairy Processing Production Line, Pasteurized Milk Equipment, Low-Temperature Sterilization and Fermentation Machine for Cow and Camel Milk
$8,203.00
Blue Lint-Free Wiping Paper - Industrial Large Roll Oil-Absorbent Shop Towels
$62.00
Green-Red AB Glue 5-Minute Fast-Drying Acrylate AB Glue for Glass Ceramic Metal Structural Adhesive Quick Set
$18.13
![Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes](https://www.gosteppe.com/cache/small/product/270189/legacy-main-0c626807b3c375d4d5d6a89b.webp)
Northern Wei Dynasty Inscriptions: Twenty Pieces from Longmen [Rubbing] - Original Size Wei Bei Calligraphy Copybook from Luoyang Longmen Grottoes
$40.30
Ru Kiln Celadon Ceramic Brush Washer Set - Large, Medium, and Small Ink Dishes for Chinese Calligraphy and Painting Supplies
$88.80
Multi-Layer Over-Toilet Storage Rack for Bathroom, Laundry Room, and Balcony - Floor Standing Organizer
$44.96
Wrought Iron Solid Stainless Steel Letters – Minimalist Space Signage, Custom Metal Advertising Letters for Storefronts & Feature Walls
$10.00
Shimoyama 304 Stainless Steel Telescopic Rod - Kitchen Sink Cutting Board Support Rack for Dish Drying and Cloth Hanging
$74.80
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
