Product Highlights:

The HC-SR04 ultrasonic sensor module is a popular choice for distance measurement and object detection in robotics and automation projects. Here are some of its key features:

  1. Operating Voltage: The operating voltage is +5V1.
  2. Quiescent Current: It has a quiescent current of less than 2mA1.
  3. Working Current: The working current is 15mA1.
  4. Effectual Angle: The effectual angle is less than 15°1.
  5. Ranging Distance: The theoretical measuring distance is 2cm to 450cm, but the practical measuring distance is 2cm to 80cm1.
  6. Accuracy: The accuracy of the sensor is 3mm.


There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground). You will find this sensor very easy to set up and use for your next range-finding project!

  • Operating Voltage: 5V DC
  • Operating Current: 15mA
  • Measure Angle: 15°
  • Ranging Distance: 2cm – 4m


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