The Keyestudio HC-SR04 Ultrasonic Sensor is a non-contact distance measurement module designed to detect objects and measure the distance between the sensor and nearby surfaces. It uses ultrasonic sound waves...
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The Keyestudio HC-SR04 Ultrasonic Sensor is a non-contact distance measurement module designed to detect objects and measure the distance between the sensor and nearby surfaces. It uses ultrasonic sound waves to calculate distance, making it ideal for obstacle detection, robotics, automation, and electronic measurement projects. Operating at 5V DC, the sensor uses separate trigger (TRIG) and echo (ECHO) pins to communicate with microcontrollers. With a typical measuring range of 2cm to 400cm and an accuracy of up to 3mm under suitable conditions, it is widely used with Arduino, robotics platforms, and DIY electronics projects.
Brand: Keyestudio
Model: HC-SR04
Operating voltage: 5V DC
Operating current: Approximately 15mA
Ultrasonic frequency: 40kHz
Measuring range: 2cm–400cm
Ranging accuracy: Up to 3mm under suitable conditions
Interface: TRIG and ECHO digital signals
Non-contact distance measurement
Compatible with Arduino and other suitable microcontrollers
Arduino distance measurement
Robot obstacle avoidance
Object detection systems
Automatic parking systems
Robotics and automation
Water-level monitoring projects
Smart home electronics
Proximity detection
DIY electronics and educational projects
