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R307 Optical Fingerprint Biometric Scanner
R307 optical fingerprint biometric scanner with high accuracy, fast recognition, and UART interface—ideal for access control and security projects.
The R307 Optical Fingerprint Biometric Scanner is a high-accuracy fingerprint recognition module designed for secure and reliable biometric authentication. Using advanced optical fingerprint sensing technology, it captures and matches fingerprint images with excellent precision and long-term stability.
The R307 module features an onboard DSP processor and flash memory for fingerprint template storage, enabling fast fingerprint enrollment and matching without the need for external processing. It communicates via UART (TTL) serial interface, making it easy to integrate with Arduino, ESP32, STM32, Raspberry Pi, and other microcontroller platforms.
With its rugged optical sensor and high recognition speed, the R307 is ideal for access control systems, attendance machines, door locks, security devices, and biometric identification projects.

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- Working current: matching for 30 mA, matching the communication for 8 mA.
- Dormancy current: no dormancy.
- Used for a GPS navigation system, water, and electricity gas meter reading system.
- With the computer and Bluetooth adapter, PDA, seamless connection equipment.
- Bluetooth module HC-08 Master and slave Two in one module.
- Use the CSR mainstream Bluetooth chip, Bluetooth V2.0 protocol standards.
- Potter default rate of 9600, the user can be set up.
- Bluetooth protocol: Bluetooth Specification v2.0+EDR
- Speed: Asynchronous: 2.1Mbps(Max) / 160 kbps, Synchronous: 1Mbps/1Mbps.
- Security: Authentication and encryption.
- Profiles: Bluetooth serial port.

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