---
product_id: 1112741
title: "Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable"
brand: "sparkfun"
price: "$4.07"
currency: USD
in_stock: false
url: https://www.desertcart.us/products/1112741-fingerprint-scanner-ttl-gt511c1r-3-3v-to-6v-with-cable
store_origin: US
region: United States of America
---

# High-Speed Identification 360° Scanning High-Accuracy Recognition Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable

**Brand:** sparkfun
**Price:** $4.07
**Availability:** ❌ Out of Stock

## Summary

> 🔒 Unlock the Future of Security!

## Quick Answers

- **What is this?** Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable by sparkfun
- **How much does it cost?** $4.07 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/1112741-fingerprint-scanner-ttl-gt511c1r-3-3v-to-6v-with-cable)

## Best For

- sparkfun enthusiasts

## Why This Product

- Trusted sparkfun brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Speed:** Experience lightning-fast fingerprint identification with the SmackFinger 3.0 Algorithm.
- • **All-Angle Recognition:** Enjoy 360° fingerprint scanning for maximum convenience and flexibility.
- • **Precision at Its Best:** Achieve high accuracy in recognition, ensuring secure access every time.
- • **Versatile Connectivity:** Utilize a simple UART protocol for seamless integration into your projects.
- • **Comprehensive Data Management:** Easily read and write fingerprint templates and databases for efficient user management.

## Overview

The Fingerprint Scanner TTL GT511C1R offers high-speed and high-accuracy fingerprint identification through its advanced SmackFinger 3.0 Algorithm. With capabilities to download fingerprint images, read and write templates, and a simple UART protocol, this scanner ensures versatile and efficient user management. Its 360° recognition feature provides unmatched convenience, making it an essential tool for modern security solutions.

## Description

Fingerprint scanners are awesome. Why use a key when you have one right at the tip of your finger? Unfortunately, they’re usually unreliable or difficult to implement. Well not anymore! We’ve found this great fingerprint module from ADH-Tech that communicates over TTL Serial so you can easily embed it into your next project.  The module itself does all of the heavy lifting behind reading and identifying the fingerprints with an on-board optical sensor and 32-bit CPU. All you need to do is send it simple commands. To get started, just register each fingerprint that you want to store by sending the corresponding command and pressing your finger against the reader three times. The fingerprint scanner can store different fingerprints and the database of prints can even be downloaded from the unit and distributed to other modules. As well as the fingerprint “template,” the analyzed version of the print, you can also retrieve the image of a fingerprint and even pull raw images from the optical sensor!  This is the more economical version of the GT-511 which has a decreased memory capacity (compared to the GT-511C3). The module can only store up to 20 different fingerprints but is capable of 360° fingerprint recognition and download and upload templates using serial interface. If you are on a budget and need only a small number of fingerprints stored, this is the perfect option for you!  The module is small and easy to mount using two mounting tabs on the side of the sensor. The on-board JST-SH connector has four signals: Vcc, GND, Tx, Rx. A compatible JST-SH pigtail is included. Demo software for PC is available in the documents below, simply connect the module to your computer using an FTDI Breakout and start the software to read fingerprints! Dimensions: 37 x 17 x 9.5 mm Attachment cable included PINOUT: from LEFT to RIGHT = TX (3.3V level - black wire), RX (3.3V level), GND, VCC (3.3V to 6V)

## Features

- High-Speed, High-Accuracy Fingerprint Identification using the SmackFinger 3.0 Algorithm
- Download Fingerprint Images from the Device
- Read and Write Fingerprint Templates and Databases
- Simple UART protocol (Default 9600 baud)
- 360° Fingerprint Recognition

## Product Details

- **Scanner Type:** Finger Print
- **Brand:** SparkFun
- **Model Name:** GT-511C1R
- **Connectivity Technology:** USB, Serial
- **Item Weight:** 0.31 Pounds
- **Standard Sheet Capacity:** 20
- **Light Source Type:** LED
- **Minimum System Requirements:** Windows 7
- **UPC:** 700112246951

## Images

![Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable - Image 1](https://m.media-amazon.com/images/I/512y11xInXL.jpg)
![Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable - Image 2](https://m.media-amazon.com/images/I/515KV2OXkyL.jpg)
![Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable - Image 3](https://m.media-amazon.com/images/I/51u56YfPEuL.jpg)
![Fingerprint Scanner TTL GT511C1R - 3.3V to 6V - With cable - Image 4](https://m.media-amazon.com/images/I/51-CT3FDWUL.jpg)

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**Shop now:** [https://www.desertcart.us/products/1112741-fingerprint-scanner-ttl-gt511c1r-3-3v-to-6v-with-cable](https://www.desertcart.us/products/1112741-fingerprint-scanner-ttl-gt511c1r-3-3v-to-6v-with-cable)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-14*