Ultrasonic Distance Sensor

This ultrasonic distance sensor is an economic sensor that comes with control circuitry that prevents inconsistent bouncy data according to application. This ultrasonic sensor offers 2cm to 400cm of non-contact functionality with a ranging accuracy that reaches up to 3 mm. This HC-SR04 sensor consists of 4-pins, an ultrasonic transmitter, a receiver, and a control circuit. This sensor has only four pins that you need to interface with; VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). Using this range sensor is as easy as it gets!