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Fingerprint Optical Scanner Reader Sensor Module R307

The R307 Optical Fingerprint Scanner Module is a high-performance biometric identification device from the R30X series, designed for accurate fingerprint acquisition, processing, and matching. It integrates image rendering, feature extraction, template storage, and search functions into a compact module that is easy to interface with a wide range of microcontrollers and embedded systems. With a high-resolution optical sensor and advanced image processing algorithms, the R307 delivers fast and reliable fingerprint recognition. It is widely used in access control systems, attendance terminals, safety deposit boxes, vehicle security, and other applications requiring secure user authentication.

Package Includes

  • 1 x R307 Optical Fingerprint Scanner Module
  • 1 x Connection Cable
103.95 AED 103.95 AED (Tax included)

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Features

  • High-resolution optical fingerprint sensor with up to 500 DPI accuracy
  • Integrated image capture, processing, feature extraction, and matching
  • Supports 1:1 and 1:N fingerprint matching methods
  • TTL serial interface for easy MCU integration
  • Configurable communication baud rate
  • Fast verification and scanning speed
  • Large storage capacity for fingerprint templates
  • Low false acceptance and false rejection rates
  • Blue backlight for clear fingerprint positioning

Specifications

  • Overall Size: Approx. 45 x 24 x 20mm
  • Backlight Color: Blue
  • Interface: USB 2.0 / UART (TTL logic level)
  • RS232 Communication Baud Rate: 9600BPS to 115200BPS (adjustable)
  • Verification Speed: 0.1 second
  • Scanning Speed: 0.2 second
  • Character File Size: 256 bytes
  • Template Size: 512 bytes
  • Fingerprint Storage Capacity: 1000 templates
  • Security Level: 5 levels (1 to 5, highest)
  • False Rejection Ratio (FRR): ≤ 1%
  • False Acceptance Ratio (FAR): ≤ 0.0001%
  • Resolution: 500 DPI
  • Operating Voltage: DC 4.2V to 6V
  • Working Current: 50mA typical
  • Peak Current: 75mA
  • Matching Method: 1:N
  • Operating Temperature: -20℃ to +50℃
  • Image Capture Surface: 1.5 x 1.1mm

Pin Definition

  • Pin 1 – 5V: Power input (DC 4.2V to 6V)
  • Pin 2 – GND: Ground, connected to system ground
  • Pin 3 – TXD: TTL data output
  • Pin 4 – RXD: TTL data input
  • Pin 5 – Touch: Finger detection signal output (maximum 50mA)
  • Pin 6 – 3.3V: Finger detection power input (DC 3.3V to 5V, approx. 5uA)

Hardware Connection

  • The module communicates with 3.3V or 5V MCU systems via the serial interface
  • TXD pin of the module connects to the RXD pin of the microcontroller
  • RXD pin of the module connects to the TXD pin of the microcontroller
  • For PC RS-232 communication, a level converter such as MAX232 is required

How It Works

  1. Fingerprint processing includes enrollment and matching operations
  2. During enrollment, the same finger is scanned twice to generate a fingerprint template
  3. The generated template is stored in the internal library
  4. During matching, a scanned fingerprint is compared against stored templates
  5. The module returns a success or failure result based on the comparison

Applications

  • Access control systems
  • Attendance and time tracking systems
  • Safety deposit boxes and lockers
  • Car door lock systems
  • Embedded security and authentication projects