HC-SR04 Ultrasonic Module

Product Description

The HC-SR04 is an affordable ultrasonic distance sensor module. It uses ultrasonic sound waves to detect objects and measure distance from 2cm to 400cm. It works on the principle of SONAR to detect objects and measure the distance to the target. The module includes two ultrasonic transceivers: one acts as a transmitter (speaker) and the other as a receiver (microphone).