SKU: 45161689010

SPF FINGERPRINT SCANNER GT521F52

Sale price$516.52 Regular price$573.91
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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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    Marcie11
    Cuba, US
    ★★★★★ 5
    Dogs love this toy!
    Color: Drool Mint, Color: Drool Mint
    My digs go crazy over this toy. They are both small and it’s the perfect size for them. It take a beating and still in great shape after 4 months!
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    Reviewed in the United States on March 12, 2026
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    Mary A.
    Bozeman, US
    ★★★★★ 5
    The Zen Dog Toy
    Color: Drool Mint
    These were a cute dog toy for my son's dog. If the person who uses Zen has a dog this is a funny dog toy to get them
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    Reviewed in the United States on May 31, 2026
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    Alyssa Lew
    Phoenix, US
    ★★★★★ 5
    Our dog’s new favorite toy!
    Color: Citrus Lick, Color: Citrus Lick
    Excellent quality and happy to support a family business. Great crinkle and a good squeaker, she was instantly hooked. More durable than anticipated as well!
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    Reviewed in the United States on March 5, 2026
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    Maddie Owen
    Lowell, US
    ★★★★★ 5
    Perfect dog toy
    Color: Drool Mint
    My dog LOVES this toy. It has a great squeaker and it’s easy to throw. He also hasn’t been able to tear it apart. It makes us laugh too because he matches his dad. Great toy!
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    Reviewed in the United States on April 8, 2026
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    Taylor
    Bozeman, US
    ★★★★★ 4
    So cute! Not durable for tough chewers
    Color: Smooth Pup, Color: Smooth Pup
    Love this toy so much just because of how cute and funny it is! Our basset hound is a chewer though so he ripped through it pretty fast. Would not recommend for tough chewers. We even got a second and he tore through it just as fast
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    Reviewed in the United States on September 2, 2025

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