Fingerprint sensor

Fingerprint sensor

Fingerprint sensor

ADA 751


A sensor of fingerprint to add biometric security to your editing.

Guarantee of quality This product is an official product of the brand Adafruit

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64,74 € tax incl.

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Secure your ave biometrics projects! This all-in-one optical fingerprint sensor will allow you to add a fingerprint reader and its verification very simply. These modules are usually used in safety equipment and they have a powerful DSP circuit that performs image processing, calculation, and search for features. Connect it to any system or microcontroller with a binding series TTL and send data to take a picture, detect the footprint, and search. You can also register new fingerprints for analysis, up to 162 digtales fingerprints can be stored in the internal flash memory. The sensor has a red LED that indicates taking picture of the footprint.

We particularly like this sensor, not only because it is is simple to use, but because it has a Windows application to test the module, you can add new footprint using this app and even view them on-screen. There is also an Arduino library for use in less than 10 minutes.


  • Supply voltage: 3.6 - 6.0VDC
  • Operating current: 120mA max
  • Peak current: 150mA max
  • Image processing time: 1.0 seconds
  • Scan window: 14mm x 18mm
  • File Signature: 256 bytes
  • File model: 512 bytes
  • Storage capacity: 162 models
  • Level of security: (1-5 low high-security)
  • False positive rate: 0.001% (security level 3)
  • False rejection rate: 1.0% (security level 3)
  • Interface: TTL
  • Speed: 9600, 19200, 28800, 38400, 57600 (default value 57600)
  • Operating temperature:-20 ° C to + 50 c
  • Operation humidity: 40%-85% HR
  • Full dimensions: 56 x 20 x 21.5 mm
  • Dimensions (when it is placed in the box): 21mm x 21mm x 21mm triangular
  • Weight: 20 grams


Arduino library: Adafruit-Fingerprint-Sensor-Library

Documentation: Datasheet DY001fingerprint

Test Windows software


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