The HC-SR04 Ultrasonic Sensor Module is a reliable and affordable solution for measuring distance with high precision. It works by sending ultrasonic waves and calculating the time taken for the echo to return, providing accurate distance measurements in real time.
Designed for Arduino, ESP32, Raspberry Pi, and other microcontrollers, this sensor is widely used in robotics, obstacle avoidance systems, automation, and security applications. With a measuring range of 2 cm to 400 cm and a high degree of accuracy, it’s perfect for beginners and advanced makers alike.
Thanks to its simple 4-pin interface (VCC, Trig, Echo, GND), the HC-SR04 is easy to integrate into any electronic project. Whether you’re building a line-following robot, a smart parking system, or an automatic water level detector, this sensor delivers consistent and precise performance.
✅ Key Features:
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Operating voltage: 5V DC
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Measuring range: 2 cm – 400 cm
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Accuracy: ±3 mm
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Simple 4-pin interface (VCC, Trig, Echo, GND)
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Compatible with Arduino, ESP32, Raspberry Pi, and more
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Ideal for robotics, obstacle detection, and automation projects
