Fingerprint Scanner Module

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Fingerprint Sensor Module makes fingerprint recognition more approachable and straightforward to incorporate into your projects. This means that fingerprint collection, registration, comparison, and search are all extremely simple. These modules include FLASH memory for storing fingerprints and can be used with any MCU or Future Projects that are intended to support TTL serial. These devices can be connected to security systems, keyless entry, attendance management systems, and a variety of other applications.


  • Voltage supply: DC 3.6 to 6.0V
  • Current supply: <120mA
  • Backlight color: green
  • Interface: UART
  • Bad rate: 9600
  • Safety level: five (from low to high: 1,2,3,4,5)
  • False Accept Rate (FAR): <0.001% (security level 3)
  • False Reject Rate (FRR): <1.0% (security level 3)
  • Able to store 127 different fingerprints

Module Pinout

The sensor has 4 wires :

  • TX – Green wires
  • VCC – Red wire
  • RX – White wire
  • GND – Black wire


Fingerprint Sensor Library

The easiest way to control the fingerprint sensor module with the Arduino is by using the Adafruit library for this sensor. Follow the next instructions to install the library:

  1. Click here to download the Adafruit Fingerprint Sensor library. You should have a .zip folder in your Downloads folder
  2. Unzip the .zip folder and you should get the Adafruit-Fingerprint-Sensor-Library-master folder
  3. Rename your folder from the Adafruit-Fingerprint-Sensor-Library-master folder to the Adafruit_Fingerprint_Sensor_Library folder
  4. Move the folder to your Arduino IDE installation libraries folder
  5. Finally, re-open your Arduino IDE

This video is gonna help you start with module: