HC-SR04 Ultrasonic Sensor is a very affordable proximity/distance sensor that has been used mainly for object avoidance in various robotics projects . It has also been used in turret applications, water level sensing, and even as a parking sensor.

Product Details

This module is the second generation of the popular HC-SR04 Low Cost Ultrasonic Sensor. Unlike the first generation HC-SR04 that can only operate between 4.8V~5V DC, this new version has wider input voltage range, allow it to work with controller operates on 3.3V.
HC-SR04 ultrasonic sensor provides a very low-cost and easy method of distance measurement. It measures distance using sonar, an ultrasonic (well above human hearing) pulse (~40KHz) is transmitted from the unit and distance-to-target is determined by measuring the time required for the echo return. This sensor offers excellent range accuracy and stable readings in an easy-to-use package. An on board 2.54mm pitch pin header allows the sensor to be plugged into a solderless breadboard for easy prototyping.


  • Power Supply: 3.3~5 VDC
  • Quiescent Current : <2mA
  • Working Current: 15mA
  • Effective Angle: <15°
  • Ranging Distance : 2cm – 400 cm or 1″ – 13ft
  • Connector: 4-pins header with 2.54mm pitch.
  • Dimension: 45mm x 20mm x 15mm
  • Weight 8.5-g.

Related Information:

1. HC-SR04 User Guide

2. Examples Code

3. DIY Ultrasonic Distance Meter

T & C

We warrant Handson Technology Manufactured Products will be free from manufacturing defects for a period of thirty (30) days following the date of delivery to you. We will replace, repair or credit you for any confirmed defective product at our option. Products that are not manufactured by Handson Technology may, or may not, be covered by original manufacturer’s warranty and passed through to you. Please contact support to confirm warranty period prior to purchase.

Warranty will not apply if Product fails or is damaged after delivery to you due to accident, abuse or misuse.


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RM 5.40
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Shipment and Delivery: 2-3 Business Days
Ship To: Refer to T&C
Brand: OEM
SKU: hcsr04x1