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GT-521F32 Finger Print Sensor Module
GT-521F32 Fingerprint Sensor Module
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GT-521F32 Finger Print Sensor Module

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Rs. 2,399.00 (Exc. GST)

The GT521F32 Fingerprint Sensor Module is made to be compatible for hobbyists projects and rapid prototyping. It is a small embedded module that consists of an optical sensor mounted on a small circuit board. The optical sensor scans the fingerprint, and these scans are processed by an onboard 32-bit microcontroller. You can also check out the GT511C3 Fingerprint sensor for a cheaper alternative.

This module is the low cost version of the GT-521F52 and has a memory up to 200 different fingerprints that can be stored and retrieved. This module uses UART interface to communicate with the system controller and It is capable of 360° fingerprint recognition using the download or upload templates.

Not only this, the GT-521Fxx series provides 450dpi resolution, with a very low false acceptance rate of <0.001% and a false rejection rate as low as  <0.1%. It takes only less than 1.5 seconds to identify a unique fingerprint!


Pin Description:

The onboard JST-SH connector has four signals:

  • Pin 1: Power VCC(+) (3.3VDC to 6VDC )
  • Pin 2: Ground
  • Pin 3: Tx
  • Pin 4: Rx

The below image is showing the pinout of the GT521F32 sensor. Connect 3.3-6V in the VCC (+) pin and ground on the GND(-) pin of the JST connector. Connect the Rx pin which is a UART Rx pin of the sensor module with a microcontroller Tx pin. By the same way, connect the Tx pin with the microcontroller Rx pin. Use the referenced library that is given below of this page for interfacing the sensor with the microcontroller unit. The default baud rate is 9600 bps.

GT521F32 Fingerprint Sensor Pinout

GT521F32 Fingerprint Sensor Module Specifications:

  • High-Speed, High-Accuracy.
  • Module Store Upto 200 different Fingerprints.
  • Capable of 1:1 Verification and 1:N Identification
  • Fingerprint Identification Using Smack Finger 3.0 Algorithm.
  • Default Baud Rate After Power On: 9600 bps.
  • Size of Template: 496 Bytes.
  • JST-SH Connector has Four Signals: Vcc, GND, Tx, Rx.
  • Fingerprints with an on-Board Optical Sensor & 32-bit CPU.
  • Maximum No. of Fingerprints: C3: 200 Sets.


  • Access control
  • Security products
  • Identification and convenience applications

Additional Resources:

GT-521FX2 Datasheet

SDK Demo software by Sparkfun

Biometric security system using Fingerprint sensor and Arduino

Fingerprint sensor interfacing with Raspberry Pi

    Read More
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    Returns Policy

    Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.

    1. Damaged During Shipment
    If you receive a product damaged during shipment, please notify us within the 3 days of you receive the product, supported by the proper pictures and description. Once our support team accept the return, we will provide a replacement or a complete refund including the return shipping cost.

    2. Wrong Item Shipped

    If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.

    Limitation of Returns
    We don't accept the returns for the products damanged by improper use of the product. Moreover we don't accept the return, if the ordered product is not fit for any specific application. Please read the product specifications and datasheet before selecting and ordering a product. Returns are accepted only with 3 days from the date of delivery.


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    Please note that the Minimum Order Value is INR 500 for COD orders.

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