Hc-Sr04 Ultrasonic Distance Sensor

The HC-SR04 Ultrasonic Sensor Module is a popular and highly accurate distance measuring sensor that uses ultrasonic sound waves to detect the distance between the sensor and an object. It provides non-contact distance measurement within a range of 2cm to 400cm, with high precision and stable performance. This module works by transmitting an ultrasonic pulse and measuring the time it takes for the echo to return. The result is converted into distance by your Arduino, ESP32, Raspberry Pi, or STM32 microcontroller. Compact, easy to use, and cost-effective, the HC-SR04 is ideal for robotics, automation, obstacle avoidance, level sensing, and smart parking systems.