HC-SR04 Datasheet – Ultrasonic Ranging Detector Sensor Module

Part Number: HC-SR04

Function: Ultrasonic Ranging Detector Sensor Module

Package: 4pin Module Type

Manufacturer: Ultrasonic


HC-SR04 Detector Sensor


This is the HC-SR04 ultrasonic ranging sensor. This economical sensor provides 2cm to 400cm of non-contact measurement functionality with a ranging accuracy that can reach up to 3mm. 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).


Detail Information

1. Power supply : 5V DC
2. Quiescent current : 2mA
3. Effectual angle : 15 degree
4. Ranging distance : 2cm – 450 cm
5. Resolution : 0.3 cm


Pinout and Electrical parameters

HC-SR04 datasheet pinout



1. Stable performance
2. Accurate distance measurement
3. High-density
4. Small blind

Application Areas :

1. Robotics barrier
2. Object distance measurement
3. Level detection
4. Public security
5. Parking detection


Referece Site

1. https://www.sparkfun.com/products/13959
2. http://www.elecfreaks.com/estore/hc-sr04-ultrasonic-sensor-distance-measuring-module-ultra01.html
3. https://github.com/JRodrigoTech/Ultrasonic-HC-SR04 ( Ultrasonic HC-SR04 library for Arduino IDE )


HC-SR04 Datasheet


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