MELO31 Optical Fingerprint Scanner

MELO31 is a FAP30 fingerprint sensor and is a rugged secure fingerprint device designed for large-scale identification and verification projects in wet environments it uses cutting edge fingerprint recognition technology to accurately and quickly authenticate a persons identity it is simple to use and can be integrated into various systems using our sdks.

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Our MELO31 Optical Fingerprint Scanner

FBI PIV certificated, MELO31 is a versatile and field-proven optical FAP30capture area fingerprint scanner. It comes with a large platen area (20.32mm x 25.40mm) to capture biometric data with great precision, speed and convenience. An array of advanced features like latent detection, lower false acceptance rate (FAR), and false recognition rate (FRR) and MINEX compliance embedded extractor support make it suitable for extensive applications that require optimum security and high accuracy. Backed with rugged and scratch-free sensor, MELO31 serves a wide range of industries to ensure seamless identification, verification, and authentication.


Speedy scanning

High precision


USB 2.0 high speed interface

Easily integrates with compatible devices


Some of the significant features of our advance biometric fingerprint scanner device are listed underneath:-

Scratch Free Optical Sensor

FBI PIV Certificated

Lower FRR and FAR

Latent Fingerprint detection

MINEX III certified high performing fingerprint algorithm

Support NIST compliance WSQ/JPEG Image compression standard

Support ISO/IEC 19794-2:2005/2011 & ANSI INCITS 378-2004 Biometric Data Interchange Format

Capture high quality image with Dry, Moist, Wet or Rough fingerprints

IP65 rating water and dust protection for outdoor application


MELO31 feature exquisite specifications that are designed to address the modern-day requirements of individual identification and authentication.

Parameters Specification
Fingerprint Sensor Type: Scratch Free Optical Sensor
Pixel Resolution: 500 DPI +/- 2%
Platen size: 20.32mm x 25.40mm
Image Size: 400 x 500
Image Grayscale: 256 (8 - Bit Gray Level)
FRR & FAR: < 0.1% & < 0.001%
Maximum Acquisition Time (Placement to Template): < 2 sec
Capture mode: Auto Finger detection functionality & Auto capture with built-in quality check (incorporates NIST quality considerations) & Support 360 Degree Fingerprint Rotation
Latent Finger Detection: Yes
Light Source: RED LED
Parameters Specification
Protocol: USB 2.0
Parameters Specification
Operating Voltage: +5.0V ±5% ( USB/UART Powered )
Operating Current: Operating Current: ~190 mA & Standby Current : ~90 mA
Parameters Specification
Operating Temperature: 0°C to +50°C
Storage Temperature: -10°C to +70°C
Humidity (Operating / Storage): < 90% RH, Non-condensing
Parameters Specification
Biometric Data Interchange Format: ISO 19794-2 : 2005 & 2011, ISO 19794-4 : 2005 & 2011, ANSI 378, WSQ3.1, JPEG2000
EMI / EMC Compliance: CE & FCC Part 15B class A
ESD protection: Contact Discharge: +/- 8kV, Air Discharge: +/- 15kV
Environmental, Health and Safety: RoHS, WEEE
Safety: EN/IEC 62368-1, IS 13252 (Part 1)
Image Quality: FBI PIV Certification
IP Rating: IP65
Device Driver: WHQL Certified WBF driver
Parameters Specification
Module (L x W x H): 75.0 x 49.0 x 23.0 mm
Module Weight approx: 90g
Device (L x W x H): 89.0 x 64.0 x 25.60 mm
Device Weight approx: 150g
Parameters Specification
Operating System: Windows 10 & 11, Android, Linux
Standard Software/SDK: 1:1 Matching: MORFIN_AUTH,
: 1:N Matching: MORFIN _SEARCH

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