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Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor
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Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor
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Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor
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This is ultrasonic sensor distance measuring module which a non-contact distance measurement module. It has high measurement accuracy and its blind area is close (up to 2cm).


  • Using IO trigger for at least 10us high level signal
  • The module automatically sends eight 40 kHz and detect whether there is a pulse signal back
  • If the signal back, through high level ,time of high output IO duration is the time from sending ultrasonic to returning.
  • Test distance = (high level time velocity of sound (340M/S) /2
  • Power supply: 5V DC, quiescent current: <2mA, effectualangle: <15, ranging distance: 2cm~500 cm, resolution: 0.3 cm
  • Documentation and Support:


Ultrasonic Module HC-SR04 Distance Measuring Transducer Sensor.
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