Ultrasonic ranging module

  • үнэ: 40000 төг

Ultrasonic ranging module HC - SR04 provides 2cm - 400cm non-contact measurement function, the ranging accuracy can reach to 3mm. The modules includes ultrasonic transmitters, receiver and control circuit. The basic principle of work:

  1. Using IO trigger for at least 10us high level signal.
  2. The Module automatically sends eight 40 kHz and detect whether there is a pulse signal back.
  3. IF the signal back, through high level , time of high output IO duration is the time from sending ultrasonic to returning.
  4. Test distance = (high level time×velocity of sound (340M/S) / 2.


-Working Voltage DC 5 V

-Working Current 15mA

-Working Frequency 40Hz

-Max Range 4m

-Min Range 2cm

-Measuring Angle 15 degree

-Trigger Input Signal 10uS TTL pulse

-Echo Output Signal Input TTL lever signal and the range in proportionDimension 45*20*15mm

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