HC-SR04 Ranging Detector Ultrasonic Distance Sensor with Cable by Corpco
Our kit comes with the HC-SR04 ultrasonic sensor board and a 8in signal cable for easy connection to your Arduino or Raspberry Pi board. There are 4 pins out of the module: VCC , Trig, Echo, GND. The board uses the standard Arduino and Raspberry Pi code librarys to add range sensing to your robotics projects.