• HC-SR04 Ultrasonic Sensor Distance Measuring Module

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:

  • 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


Wire connecting direct as following: 1. 5V Supply 
2. Trigger Pulse Input
3. Echo Pulse Output
4. GND

If you are sourcing a ultrasonic ranging module , the HC-SR04 is good choice . Its stable performance and high ranging accuracy  make it a popular module in electronic market .

Compared to the Shape IR ranging module , HC-SR04 is more inexpensive than it . But it has the same ranging accuracy and longer ranging distance.

More details:

  • power supply :5V DC

  • quiescent current : <2mA

  • effectual angle: <15°

  • ranging distance : 2cm – 500 cm

  • resolution : 0.3 cm

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HC-SR04 Ultrasonic Sensor Distance Measuring Module

  • Product Code: HC-SR04
  • Availability: In Stock
  • Rs.0.00


Tags: HC-SR04, Ultrasonic, Sensor, Distance, Measuring, Module