> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt

# Ultrasonic Distance Sensor - 3.3V (HC-SR04), 180° (red)

**Type:** Product page · **SKU:** SEN-28798 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/sparkfun-hc-sr04-red-3-3v-ultrasonic-distance-sensor.html ([markdown](https://core-electronics.com.au/sparkfun-hc-sr04-red-3-3v-ultrasonic-distance-sensor.html.md))

This is the HC-SR04 ultrasonic distance sensor, now in Red! This economical sensor offers non-contact measurement functionality ranging from 2cm to 400cm,...

## Pricing

- **Price:** $12.95 (inc GST) — $11.77 AUD, exc GST
- **Quantity discounts:** 5+ $11.42 (exc GST) · 25+ $11.18 (exc GST) · 100+ $10.71 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 120 more in 5–11 days.

## How to buy

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## Description

Tis is the HC-SR04 ultrasonic distance sensor, now in Red! This economical sensor offers non-contact measurement functionality ranging from 2cm to 400cm, with a ranging accuracy of 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). 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.

**Note:** This is the same ultrasonic sensor used with the XRP & XRP DIY kits.

### Features & Specs

- Working Voltage (DC): 3.3V~5V
- Working Current: 15mA
- Working Frequency: 40Hz
- Max Range: 4m
- Min Range: 2cm
- Measuring Angle: 15°
- Dimension: 45 x 20 x 15mm

### Documentation

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/Ultrasonic_Ranging_Module_HC-SR04-R__SEN-28798_846553a74a1.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN-28798-1.jpg)