Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Model Number | AJ-SR04M / RCWL-1670 |
| Operating Voltage | 3.3V - 5V DC |
| Detection Range | 2cm - 450cm |
| Waterproof Rating | IP67 |
| Ultrasonic Frequency | 40kHz |
| Interface Type | Single Wire UART / TTL |
| Dimensions | 23mm x 45mm x 15mm |
| Operating Temperature | -20°C to 70°C |
| Static Current | < 2mA |
| Package Content | 1x Sensor Module, 1x Connection Cable |
Anonymous
Apr 02, 2026
Rating: 5/5
Exactly as described
Fast shipping and the module works immediately. Measured distance accurately up to 4 meters.
Anonymous
Feb 10, 2026
Rating: 4/5
Good sensor, tricky library
Hardware is solid. Had to write a custom library for ESP32 but once working, it's reliable.
Anonymous
Jan 27, 2026
Rating: 5/5
Single wire is convenient
Saves GPIO pins compared to HC-SR04. Great for projects with limited pins.
Anonymous
Jan 23, 2026
Rating: 3/5
Range varies in humidity
Works well indoors. Outdoors in high humidity, the max range drops slightly. Still usable.
Anonymous
Jan 23, 2026
Rating: 5/5
Perfect for outdoor robot
Used this for my garden robot. Waterproofing holds up well against sprinklers. Much better than the standard blue sensors.
Q: What is the maximum detection distance?
A: Under ideal conditions, it reaches up to 4.5 meters.
Q: What is the beam angle?
A: The ultrasonic beam angle is approximately 15 degrees.
Q: Is this compatible with Arduino Uno?
A: Yes, it works with 5V logic Arduino boards.
Q: Can this be submerged in water?
A: No, it is waterproof against rain/splashes (IP67) but not designed for submersion.
Q: Does it use Trig and Echo pins?
A: No, this model uses a single TX/RX wire for communication.
Marie's Paper Blending Stumps Thickened Xuan Paper Blending Stumps Marie's Student Sketch Set Blending Stumps Rubbing Cotton Painting Special Paper Blending Stumps Smudging Pens Art Supplies Xuan Paper Sketch Fixative
$5.09
Inner Mongolia Milk Skin Processing Equipment - Condensed Milk and Butter Production Line, Fully Automatic Cheese Making Machine
$13,580.00
Yijiayi Plastic Surgery - Hair Follicle Analysis to Assess Growth, Prevent Hair Loss, and Plan Transplants
$10.00
Hell Training Rock Guitar by Shinichi Kobayashi - Electric Guitar Speed Playing Tutorial
$106.00
Mai Da Chu Commercial Food Warmer Cabinet, Large-Capacity Constant-Temperature Heating Cart for Banquets, Hotels, and Kitchens
$8,165.00
Children's Activity Appliance Storage Box - Case for Braces, Underbite Correctors, Expanders, and Denture Cleaning
$16.80
Stainless Steel Cable Raceway Arc-Shaped Anti-Step Floor Metal Surface Mount Decorative Invisible Wire Channel
$2.50
Electric Watercolor Spray Pen Children Hand-painted Color Pa
$46.55
408 Fast-Drying Glue - Strong Low-Whitening Instant Adhesive for Metal and Plastic, Heat Resistant
$53.12
UE5.1-5.7 Ancient Sci-Fi Gate Model Instrument Consultation
$2.00
Biliansheng Hair Transplant - Non-Shave Female Hairline Restoration & Density Enhancement
$19,999.00
Water Brush Pen Set Large Capacity Beginner Gouache Solid Watercolor Paint Brush Tools Line Drawing Art Student
$32.00
Beginner Watercolor Painting Line Art Coloring Book, Hua Meng Lv Ren by Stan, Fine Texture, 2-Pack Free Shipping
$10.60
New Wanli Tire 265/45R21 SU306+ - Compatible with AITO M7, BYD Tang, Range Rover, Li Auto, and NIO
$528.00
Suzhou Factory Wholesale Chain Store Logo - RGB Illuminated Letters, Acrylic Neon Signs for Window and Counter Display
$1,911.00
RoHS 1.0 Environmental Tester for Alloy Analysis and Heavy Metal Detection in Plastic Toys
$15.30
Mont Marte Long-Handle Bristle Brush – Professional Art Brush for Acrylics, Oil Painting, and Flat Wash Techniques
$37,500.00
Portable Plastic Backpack Fertilizer Bucket for Manual Fruit Picking, Seed Feeding, and PPC Fertilization
$9.50
Chinese-Style Hand-Drawn Plant Line Art Coloring Book on 100% Cotton Watercolor Paper
$15.80
Eagle Brand 99021 Industrial Scouring Pads, Cleaning Cloths, and Polishing Pads Supply
$666.00
Pad Printing Machine Parts - Zhongke 4-Inch Blade Clamp, Blade Holder, and Doctor Blade Frame (In Stock)
$4.50
Pneumatic Throttle Valve Quick Connect Fitting SL4-01/4-02/4-03 Air Pressure Regulator Flow Control Valve
$8.60
Pad Printing Silicone Rubber Heads Electric Long Round Square Durable Customizable 30-Year Established Store
$3.00
Specialized Vegetable Growing Box - Foam Balcony Planter, Rectangular Plastic Pot for Home Gardening
$41.70
Candy Naoko Gujima Mr. Saxophone City Pop Sheet Music with Accompaniment Demo
$37.00
Multi-Color Detachable Water Bucket Stand - Office Purified Water Dispenser Holder (Inverted)
$60.95
Oil-Based Original Strong Fast-Drying Adhesive for Metal, Plastic, Rubber, Ceramics, and Wood, Multi-Purpose Transparent Glue (Not 502)
$21.60
Jay Chou - Feng BROTHER_CHAO Piano Accompaniment Sheet Music
$50.00
Toplip Automatic Retractable Air Hose Reel, Water Drum, High-Pressure Foam Drum for Pneumatic Tools and Auto Repair
$118.00
500L Yogurt Production Line - Stand-Up Pouch Filling Machine with Complete Dairy Processing Equipment and Fermentation Tank
$13,720.00
