Features:

  • Using IO trigger for high level signal ( Not less that 10us)
  • The module sends eight 40 kHz automatically and detect whether there is a pulse signal back
  • Working Voltage: DC 3.3V-5.5V; Quiescent current: less than 2mA
  • Test distance=((Duration of high level)*(Sonic :340m/s))/2
  • Good for learning basic knowledge about Arduino and sensors