SKU: 45161689010

SPF FINGERPRINT SCANNER GT521F52

Sale price$516.52 Regular price$573.91
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Ships within 48 hours · Estimated delivery Aug 16 - Aug 21

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Description

SPF FINGERPRINT SCANNER GT521F52SparkFun Fingerprint Scanner TTL (GT 521F52) "REQUIRES SPF 4W JUMPER CABLE SOLD SEPARATELY" Overview Fingerprint scanners are awesome! Why use a key when you have one right at the tip of your finger? Unfortunately, theyre often unreliable or difficult to implement. Well not anymore! This great GT 521F52 fingerprint module from ADH Tech communicates over TTL Serial so you can easily embed it into your next project. The module itself does all of the

SparkFun Fingerprint Scanner - TTL (GT-521F52) "REQUIRES SPF 4W JUMPER CABLE-SOLD SEPARATELY"

Overview

Fingerprint scanners are awesome! Why use a key when you have one right at the tip of your finger? Unfortunately, they’re often unreliable or difficult to implement. Well not anymore! This great GT-521F52 fingerprint module from ADH-Tech 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 onboard optical sensor and 32-bit ARM Cortex M3 processor.

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. In addition to the fingerprint “template,” the analyzed version of the print, you can retrieve the image of a fingerprint and even pull raw images from the optical sensor!

This module is the upgraded version of the GT-521F32 and can store up to an astounding 3,000 different fingerprints! It is capable of 360° fingerprint recognition and download/upload templates using serial interface. Additionally, the GT-521Fxx series features a resolution of 450dpi, with a false acceptance rate of <0.001% and a false rejection rate of <0.1% while only needing <1.5 seconds to identify a unique fingerprint!

The module is small and easy to mount using four mounting holes surrounding the sensor. The onboard JST-SH connector has four signals: Vcc, GND, Tx and Rx. A compatible JST-SH pigtail can be found in the Hookup Accessories section below.

Note: Please be aware that even though this fingerprint scanner is equipped with the same connector we use on all of our Qwiic boards, it is NOT Qwiic or I2C compatible. That being said, all of our Qwiic cables, like our 100mm version, will work for this board.

Features

  • Simple UART & USB communication protocol
  • Complies with USB 2.0 full-speed specification
  • Ultra-thin optical sensor
  • Resolution 450dpi
  • Capable of 360° recognition
  • Storage for 3,000 unique fingerprints
  • Wake up on Finger Function
  • Works well with dry, moist or rough fingerprints
  • Anti-scratch with surface high hardness ≧ 5H
  • 1:1 verification, 1:N identification
  • High-accuracy and high-speed fingerprint identification technology
  • 4x mounting holes
  • 2x JST SH connectors

     

    Specification

     

     

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
    1. Standard Shipping : 3-10 business days
    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 45161689010

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    Tiffany
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    Reviewed in the United States on May 9, 2026
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    Judie Edwards
    Lexington, US
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    Not stiff or tight…
    Size: 13.5 Little Kid, Color: Turquoise/Multi
    My niece loved them. So many of the slips in shoes are too stiff and tight, this one was easy on, not stiff or tight, just perfect!
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    Reviewed in the United States on March 18, 2026
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    Angela Guillermo
    Draper, US
    ★★★★★ 5
    De acuerdo a lo esperado
    Size: 1 Little Kid, Color: Lavender
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    MANUEL U.
    Pawtucket, US
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    Excelente en todo sentido
    100% Recommended; expected product and excellent service from the seller. Package received in Colombia, without problems. 100% Recomendado; producto esperado y excelente servicio del vendedor. Paquete recibido en Colombia, sin problemas.
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    Vicki
    Birmingham, US
    ★★★★★ 3
    Narrow
    Size: 11.5 Little Kid, Color: Lavender
    These were so cute, but run narrow. My daughter tried wearing them but she kept complaining they were too tight. Wish we could love them because I love how easy this brand is for my daughter to get on her feet
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    Reviewed in the United States on August 19, 2025

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