HC-SR04 Ultrasonic distance detection module

HC-SR04 Ultrasonic distance detection module
Review score
4.5 / 5.0
Item number10037
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The HC-SR04 module measures distance to objects by means of ultrasonic reflection. This is done by firing pulses of 40 kHz to the environment, after which the time required to receive the reflected signals is measured. By dividing this time by a constant, the distance can be determined fairly precisely (up to 0.3 cm precision!). Works with all hard surfaces (the sound must be able to be reflected).

  • Voltage: 5V
  • Current:


Current 2 mA
Spanning 5 V


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Question and answer


The Netherlands
5 stars
Old acquaintance.
Placed on 
The Netherlands
4 stars
Works very well, fairly easy to program
Placed on 
The Netherlands
5 stars
Works fine
Placed on 
The Netherlands
3 stars
I use this sensor in my rain reservoir to measure the level of rain water and the humidity is apparently a problem. The measurement fails after a few months. The interior works fine.
Placed on 
The Netherlands
5 stars
Excellent quality
Placed on 
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