# 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.

## 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)