R305 Fingerprint Recognition Sensor

R305 Fingerprint Recognition Sensor Module

Optical Biometric Identification Sensor

The R305 Fingerprint Recognition Sensor Module is a high-performance optical fingerprint identification system designed for secure and reliable biometric authentication. It integrates fingerprint image acquisition, processing, feature extraction, and matching into a single compact module, making it ideal for Arduino, Raspberry Pi, ESP32/ESP8266, and embedded security projects.

The R305 provides fast response, high accuracy, and robust performance, suitable for access control and identity verification applications.

Key Features

• Optical Fingerprint Sensing Technology

• High Accuracy and Fast Matching Speed

• Onboard Image Processing & Storage

• UART Serial Communication Interface

• Low Power Consumption

• Compact and Durable Housing

• Supports Fingerprint Enrollment & Verification

Technical Specifications

• Sensor Type: Optical Fingerprint Sensor

• Model: R305

• Operating Voltage: 3.6V – 6.0V DC

• Operating Current: < 120 mA

• Communication Protocol: UART (TTL Level)

• Baud Rate: 9600 bps (default)

• Image Resolution: 256 × 288 pixels

• Recognition Time: < 1 second

• False Acceptance Rate (FAR): < 0.001%

• False Rejection Rate (FRR): < 1%

Memory & Capacity

• Fingerprint Storage Capacity: Up to 1000 fingerprints

• Template Format: Optical feature templates

• Internal Flash Memory: Built-in

Pin Configuration

• VCC: Power Supply

• GND: Ground

• TX: UART Transmit

• RX: UART Receive

Module Components

• Optical Scanner Head:

  • Slanted glass window for easy finger placement

  • Scratch-resistant protective surface

• Controller PCB:

  • Signal processing circuitry

  • Power regulation components

  • UART communication interface

Applications

• Biometric door lock systems

• Attendance and time-tracking systems

• Secure access control units

• Smart lockers and safes

• IoT-based security projects

• Home and office automation

• Educational and research projects

Advantages

• Eliminates need for passwords or keys

• High reliability and long service life

• Easy integration with microcontrollers

• Standalone operation with internal memory