Ultrasonic Sensor HCSR-04

Description

This HC-SR04-Ultrasonic Range Finder is a very popular sensor which is found in many applications where it requires to measure distance and detect the objects. The module has two eyes like projects in the front which form the Ultrasonic transmitter and Receiver.  The HC-SR04  ultrasonic sensor uses sonar to determine the distance to an object like bats or dolphins do.

This ultrasonic sensor module is a transmitter, a receiver, and a control circuit in one single pack. It has a very handy and compact construction. It offers excellent range accuracy and stable readings in an easy-to-use package. Its operation is not affected by sunlight or black material like Sharp rangefinders are (although acoustically soft materials like cloth can be difficult to detect).