R307s Optical Fingerprint Reader Sensor Module – UART Interface

The R307s Optical Fingerprint Reader Module is an all-in-one biometric solution designed for seamless integration into security and identification systems. This versatile sensor combines high-quality image collection with advanced algorithm chips to handle fingerprint enrollment, storage, and verification internally. Equipped with a TTL UART interface, it can connect directly to microcontrollers or interface with a PC using a USB-to-Serial adapter.

High-Resolution Imaging & Detection Featuring professional optical technology, the R307s captures high-clarity fingerprint images at a resolution of up to 500 dpi. It includes a built-in finger detection function to trigger the scanning process automatically, ensuring a smooth user experience. The module is manufactured with precise techniques to deliver consistent, excellent performance in various environmental conditions.

Flexible Configuration & Integration Designed for easy secondary development, the module supports both 1:1 (Verification) and 1:N (Identification) modes. Its dual-voltage compatibility allows it to interface directly with both 3.3V and 5V systems, making it a “plug-and-play” component for Arduino, ESP32, and Raspberry Pi projects. Its low power consumption and compact size make it ideal for battery-operated or space-constrained applications.

Key Features

• TTL UART Interface: Simple serial communication for easy connection to MCUs or PCs.

• Onboard Storage: Enroll and store fingerprint data directly on the module’s internal memory.

• Dual Voltage Support: Directly compatible with 3.3V and 5V logic levels.

• Advanced Algorithm: Integrated chip handles image processing and matching algorithms for fast results.

• Energy Efficient: Boasts low power consumption for long-term reliability in portable devices.

• High Precision: 500 dpi optical sensor ensures accurate recognition and security.

Technical Specifications

Feature	Specification
Model	R307s
Sensor Type	Optical
Interface	TTL UART
Resolution	500 dpi
Matching Modes	1:1; 1:N
Voltage Compatibility	3.3V and 5V
Features	Image processing, finger detection

Typical Application Scenarios

• Access Control: Biometric door locks for homes and offices.

• Attendance Systems: Employee time-tracking devices.

• Financial Security: Safety deposit boxes and secure lockers.

• Automotive: Fingerprint-based car door locks and ignition systems.

  Package Includes

• 1 x R307s Optical Fingerprint Reader Sensor Module

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