Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	DC 5V
Static Current	< 2mA
Measuring Angle	15 degrees
Measuring Range	2cm - 400cm
Resolution	0.3cm
Trigger Input Signal	10µS TTL pulse
Echo Output Signal	TTL level signal proportional to distance
Dimensions	45mm x 20mm x 15mm
Mounting Hole Diameter	2mm
Compatible Platforms	Arduino, Raspberry Pi, STM32

6 reviews

Anonymous

Mar 29, 2026

Rating: 3/5

Works but needs calibration

The module functions, but the readings were slightly off initially. I had to add a calibration factor in my code to get precise measurements. Once calibrated, it's been stable.

Anonymous

Mar 28, 2026

Rating: 5/5

Easy to use for beginners

Bought this for my son's science fair project. The documentation online is plentiful, and we got it working within an hour. It reliably detects walls and furniture.

Anonymous

Mar 27, 2026

Rating: 4/5

Good value but sensitive to angles

Great sensor for the price. It works well for straight-on detection, but I noticed it struggles a bit if the object is at a sharp angle. Still, for basic collision avoidance, it does the job perfectly.

Anonymous

Mar 23, 2026

Rating: 5/5

Reliable and compact

I've used several brands of HC-SR04 modules, and these are consistent. The size is small enough to fit on my custom drone frame without adding too much weight. Highly recommended.

Anonymous

Mar 12, 2026

Rating: 5/5

Standard component, great quality

This is the industry standard for a reason. Solid build quality, clear pins, and consistent performance. I ordered ten for a classroom set, and all of them work perfectly.

Anonymous

Mar 03, 2026

Rating: 5/5

Perfect for my robotics project

This ultrasonic sensor works flawlessly with my Arduino Uno. The range is accurate up to about 3 meters, which is exactly what I needed for my obstacle avoidance robot. Setup was straightforward using standard libraries.

5 FAQ

Q: Does this come with jumper wires included?

A: No, the package includes only the ultrasonic module itself. Jumper wires are sold separately.

Q: Is this sensor waterproof for outdoor use?

A: No, this module is not waterproof. It should only be used in dry, indoor environments or protected enclosures if used outdoors.

Q: What is the minimum distance this module can detect?

A: The minimum measurable distance is approximately 2cm. Objects closer than this may not be detected accurately or at all.

Q: How do I handle multiple sensors on one project without interference?

A: To avoid crosstalk, you should trigger each sensor sequentially rather than simultaneously. Add a small delay (e.g., 60ms) between triggering different sensors.

Q: Can this sensor be used with a 3.3V logic system like ESP32?

A: Yes, but you may need a voltage divider or a logic level converter for the Echo pin, as the module outputs 5V TTL signals which can damage 3.3V GPIO pins.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

Thin Film Pressure Sensor Display, USB Rechargeable Flexible Resistive Pressure Digital Display Module, Wide Range Wireless

$20.00

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

5A Range Current Transformer Module Voltage Sensor Single-Phase AC Active Output Current Transmitter

$5.06

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

AHT10 High-Precision Digital Temperature and Humidity Sensor Measurement Module I2C Communication Replaces sht20

$7.88

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Ningbo Keli SQB Cantilever Beam Weighing Module Sensor 100kg 500kg 1t 2t 3 Ton Small Floor Scale Inductor

$48.00