Ultrasonic Distance Sensor HC-SR04

Part NumberHC-SR04
Ultrasonic Distance Sensor HC-SR04

Ultrasonic distance sensor from 2 cm to 400 cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm.


Datasheet HC-SR04
81 Kb, File published: Mar 11, 2020, Pages: 3
Ultrasonic ranging module HC-SR04 provides 2cm-400cm non-contact measurement function, the ranging accuracy can reach to 3mm.
Extract from the document
User Guide HC-SR04
740 Kb, File published: Mar 11, 2020, Pages: 6
Ultrasonic transmitter emitted an ultrasonic wave in one direction, and started timing when it launched.
Extract from the document


HC-SR04 Buy PriceBuy HC-SR04 on RadioLocman.Price
US-100 US-015 US-016 US-025 US-026 CS100 HC-SR04 Ultrasonic Ranging Sensor Module Board Distance Measuring Detector For Arduino0,03 $

Detailed Description

Ultrasonic Distance Sensor HC-SR04

Ultrasonic Ranging Module HC-SR04

Each HC-SR04 module includes an ultrasonic transmitter, a receiver and a control circuit.

There are only four pins that you need to worry about on the HC-SR04: VCC (Power), Trig (Trigger), Echo (Receive), and GND (Ground).

You will find this sensor very easy to set up and use for your next range-finding project!

This sensor has additional control circuitry that can prevent inconsistent "bouncy" data depending on the application.


  • Operating Voltage: 5V DC
  • Operating Current: 15mA
  • Measure Angle: 15°
  • Ranging Distance: 2cm - 4m
  • Quiescent Current : <2mA
  • Resolution : 0.3 cm
  • Trigger Input Pulse width: 10uS
  • Dimension: 45mm x 20mm x 15mm


Follow the next schematic diagram to wire the HC-SR04 ultrasonic sensor to the Arduino.

schematic diagram to wire the HC-SR04 ultrasonic sensor to the Arduino

The following table shows the connections you need to make:

Ultrasonic Sensor HC-SR04 Arduino
Trig Pin 11
Echo Pin 12

Other Names:


JLCPCP: 2USD 2Layer 5PCBs, 5USD 4Layer 5PCBs

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