HC-SR04 - Ultrasonic Sensor

HC-SR04 - Ultrasonic Sensor
HC-SR04 - Ultrasonic Sensor HC-SR04 - Ultrasonic Sensor HC-SR04 - Ultrasonic Sensor
Product Code: G50EFBF9C7270F
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Availability: 1200
Price: $1.50

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This ultrasonic sensor is a non-contact distance measurement module which is compatible with the arduino or other system. It’s designed for easy modular project usage with industrial performance.  


  • Detecting range: 3cm-4m
  • Best in 30 degree angle
  • Electronic brick compatible interface
  • 5VDC power supply
  • Breadboard friendly
  • Dual transducer
  • Arduino library ready



Supply voltage 5V
Global Current Consumption 15 mA
Ultrasonic Frequency 40k Hz
Maximal Range 400 cm
Minimal Range 3 cm
Resolution 1 cm
Trigger Pulse Width 10 μs
Outline Dimension 43x20x15 mm


Mechanic Dimensions


A short ultrasonic pulse is transmitted at the time 0, reflected by an object. The senor receives this signal and converts it to an electric signal. The next pulse can be transmitted when the echo is faded away. This time period is called cycle period. The recommend cycle period should be no less than 50ms. If a 10μs width trigger pulse is sent to the signal pin, the Ultrasonic module will output eight 40kHz ultrasonic signal and detect the echo back. The measured distance is proportional to the echo pulse width and can be calculated by the formula above. If no obstacle is detected, the output pin will give a 38ms high level signal.



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