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.
Natural Wheat Straw Baby Rattle - Children's Musical Instrument Toy, Maraca, Shaker Bell for Newborns - Orff Music Instrument
$10.80
CANDLE.LAB | 100% Cotton Unwaxed Candle Wick Roll - Thin Stem Chandelier Candle Making Supplies #31
$25.00
Pneumatic Rotary Vibrator - Feiyu GT25 Pneumatic Vibrator - Quality Guaranteed
$997.00
Quick-Frozen Vegetable Deodorizing Sterilization Washer IRW Zhongfang Ready-to-Cook Vegetable Production Washing Line Semi-Finished Vegetable Processing Oxygen Equipment
$27,000.00
KETELES 105R7120 Carbon Fiber Road Bike - Lightweight Racing Bicycle with Gear Shifter
$11,339.00
Natural White Crystal Sugar Cube DIY Crystal Jewelry Accessories Materials Irregular White Crystal Blocks
$2.50
Foldable Silicone Brush Washing Bucket - Portable Water Container for Calligraphy and Painting Students
$8.42
Cute Cartoon Bird Ceramic Brush Washer - Decorative Pen Cleaning Cup and Photo Prop
$12.60
Kitchen Storage Rack with Drainage Tray – Organizer for Dishcloths, Faucets, Sink Areas, and Dishwashing Supplies
$4.15
Sheng Y Graffiti Paint Brush Set, Children's Stationery Kit with Art Watercolor Pens, Factory Direct Gift Supplies
$49.10
Ningbo Manufacturer Display and Storage Rack, Wall-Mounted Tire Storage for Home Garage, Customizable Wall Tire Rack
$237.60
Universal Low-Temperature 3D Printing Pen Filament PCL, Eco-Friendly Material Wire 1.75mm Compatible with Deli Pens, 40 Color Options
$3.80
Automatic Feeder - Stainless Steel Food Machinery Accessory Equipment
$20,150.00
Henkel Loctite Super Glue Series: 401, 406, 460, 480, 495, 4011, 4161, 496, 382, 410
$28.00
Over-Toilet Storage Rack with Tissue Organizer for Bathroom, Vanity, and Shower Gel - Multi-Use Bathroom Shelf
$27.66
15-inch Carbon Fiber FPV Drone Frame - High-Strength Quadcopter Aerial Photography Chassis Direct Sale
$396.44
Petal-Shaped Ceramic Tea Scoop and Holder for Gongfu Tea Ceremony
$97.00
Scented Candle Waxing Cotton Wick with Base Wick Fixer Sticker DIY Materials
$0.35
Stainless Steel Fish Tank Converter - Bucket to Aquarium Adapter with Inverted Stand and Faucet Spout for Mineral Water Jugs
$13.58
Non-woven Cleaning Cloths, Lint-free Wiping Rags, Oil-absorbing Paper, Machine Cleaning Cloth, Dust Removal Cloth for Subway Use (No Washing Required)
$138.00
Large Paint Brush Set - Watercolor Pen Kit for Children's Day Art and Drawing
$31.25
Foldable Car Tire Stone Removal Tool, Explosion-Proof Scraper Hook for Extracting Pebbles from Tires
$19.53
Black Swan Watercolor, Gouache, and Acrylic Paint Brush Set - Professional Art Painting Tools for Numbered Paint-by-Number Kits
$6.80
Jiangchuan 800 Roll-to-Roll Oil-Heated Roller Heat Transfer Machine – Digital Sublimation Printer for Curtain Fabric Rolls
$147,743.75
Traditional Handcrafted Wooden Rattle for Newborns – Safe for Teething, Intangible Cultural Heritage Toy
$10.10
All-Season Quiet and Comfortable Vacuum Tires for Buick Enclave 2013-2014 - Custom Fit, Wear-Resistant
$458.00
Mia Core Paper Stump and Blending Knife Set, Double-Ended Blending Pen for Sketching, Art Student Drawing Tools (S/M/L)
$4.28
Feileniao Gongbi Painting Draft Sheets – Pre-Outlined Bird-and-Flower Designs on Sized Xuan Paper for Color Filling Practice
$8.42
Automatic Retractable Air Hose Reel, Electronic Drum, Water Drum, Yarn Clamp, Air Pump Hose for Auto Repair, Beauty, Gardening, and Washing
$280.00
LA Curved Surface Screen Printing Machine - Automatic Cup Printer, Cylindrical Net Printer for Cosmetic Bottles
$26,750.00
