HC-SR04 Ultrasonic Distance Sensor Module | 2cm–400cm Range for Arduino, ESP32 & Raspberry Pi

The HC-SR04 Ultrasonic Distance Sensor Module is a high-precision, non-contact distance measurement sensor that uses ultrasonic waves to accurately detect objects within a range of 2 cm to 400 cm. It is widely used in robotics, obstacle avoidance, liquid level measurement, parking systems, and IoT projects.

The module features Trig and Echo pins for simple integration with Arduino, ESP32, ESP8266, Raspberry Pi (with level shifting where required), STM32, and other microcontroller platforms. Its reliable performance, low cost, and easy programming make it one of the most popular ultrasonic sensors for educational and professional electronics projects.

Features

• Non-contact ultrasonic distance measurement
• Measuring range from 2 cm to 400 cm
• High measurement accuracy
• Stable and reliable performance
• Simple 4-pin interface
• Fast response time
• Low power consumption
• Compatible with Arduino, ESP32, ESP8266, Raspberry Pi, STM32, and other microcontrollers
• Ideal for robotics, automation, and obstacle detection

Specifications

Applications

• Obstacle Avoidance Robots
• Distance Measurement
• Smart Parking Systems
• Water Tank Level Monitoring
• Automatic Doors
• Robotics Projects
• IoT Devices
• Smart Home Automation
• Industrial Automation
• STEM Education