Description
Reviews
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Model Version | HC-SR04 Standard |
| Operating Voltage | DC 5V |
| Operating Current | 15mA |
| Ultrasonic Frequency | 40kHz |
| Measuring Range | 2cm to 400cm |
| Measuring Angle | 15 Degrees |
| Trigger Input Signal | 10uS TTL Pulse |
| Module Dimensions | 45mm x 20mm x 15mm |
| Interface Type | 4-Pin Header (VCC, Trig, Echo, GND) |
| Compatible Platforms | Arduino, Raspberry Pi, STM32 |
Anonymous
Mar 23, 2026
Rating: 5/5
Perfect for Robotics
Works exactly as described. Used it for my obstacle avoidance robot and the readings are consistent.
Anonymous
Feb 13, 2026
Rating: 5/5
Accurate Distance
Tested against a tape measure and it was within 1cm accuracy.
Anonymous
Feb 09, 2026
Rating: 3/5
Sensitive to Noise
Works well indoors but struggles with background noise outdoors.
Anonymous
Jan 30, 2026
Rating: 4/5
Good Value
Quality is decent for the price. Wiring diagram could be clearer.
Anonymous
Jan 18, 2026
Rating: 5/5
Great for Students
Bought 10 for my classroom. All functioning perfectly.
Q: Can I use this with 3.3V logic?
A: Yes, but a voltage divider is recommended for the Echo pin to protect 3.3V boards.
Q: Can I use multiple sensors?
A: Yes, but ensure trigger pulses do not overlap to avoid interference.
Q: Is there a library available?
A: Yes, many open-source libraries exist for Arduino and Python.
Q: What is the minimum distance?
A: The minimum measurable distance is approximately 2cm.
Q: Is this module waterproof?
A: No, this module is not waterproof and should be kept dry.
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
