R307 Optical Fingerprint Sensor Module

The R307 Optical Fingerprint Sensor Module is a compact and reliable biometric fingerprint recognition module designed for Arduino, ESP32, Raspberry Pi, STM32, and other microcontroller-based projects. It uses optical fingerprint sensing technology with an integrated processor for fingerprint image capture, processing, matching, searching, and template storage.

The R307 supports 1:1 verification and 1:N fingerprint identification, allowing stored fingerprints to be used for secure authentication and identification. It can store up to 1000 fingerprint templates and communicates through a TTL UART interface, making it easy to integrate into electronic security and automation projects. The typical operating voltage is 4.2V–6.0V DC, with 5V being commonly used.

Key Features

• Optical fingerprint recognition for biometric identification and authentication.
• Model: R307 Optical Fingerprint Sensor Module.
• Fingerprint storage capacity: Up to 1000 fingerprint templates.
• Supports 1:1 fingerprint verification and 1:N fingerprint searching.
• TTL UART interface for easy connection with microcontrollers.
• Default UART baud rate: 57600 bps, with configurable baud rates.
• Fingerprint image capture time of approximately less than 0.3 seconds.
• 500 DPI-class optical imaging for detailed fingerprint capture.
• Built-in processing for fingerprint enrollment, matching, searching, and template storage.
• 5 adjustable security levels.
• Compact design suitable for embedded electronics projects.
• Compatible with popular development platforms such as Arduino, ESP32, Raspberry Pi and STM32.

Applications

•  Fingerprint Door Lock Systems
•  Access Control Systems
•  Biometric Attendance Systems
• Smart Home Security
•  Electronic Locker & Safe Systems
•  Arduino & Robotics Projects
•  IoT Security Projects
•  Computer/Device Authentication
•  Student Attendance Projects
•  DIY Biometric Identification Systems
• ? Industrial Access Control
• Smart Cabinet and Security Systems

Specifications

• Sensor Type: Optical Fingerprint Sensor
• Model: R307
• Operating Voltage: DC 4.2V–6.0V
• Typical Working Voltage: 5V
• Working Current: Approximately 50mA typical
• Peak Current: Approximately 80mA
• Fingerprint Capacity: Up to 1000 templates
• Template Size: 512 bytes
• Characteristic File Size: 256 bytes
• Fingerprint Window: Approximately 14 × 18 mm
• Matching Mode: 1:1 and 1:N
• Interface: TTL UART / USB on supported versions
• Default Baud Rate: 57600 bps
• Security Level: 1–5
• Search Time: Less than approximately 1 second for 1:1000 search
• Fingerprint Image Resolution: Up to approximately 500 DPI
• Operating Temperature: Varies by version; commonly around -20°C to +40/+50°C

Package Includes

• 1 × R307 Optical Fingerprint Sensor Module
• 1 × 6-Pin Connecting Cable