R307 Fingerprint Identification Module Reader Sensor

The R307 Fingerprint Identification Module is a powerful and reliable optical biometric sensor designed for accurate fingerprint recognition in a wide range of security and identification applications. It uniquely integrates both the image collection sensor and the fingerprint algorithm processing chip into a single compact unit, eliminating the need for external processing and making it an all-in-one solution for embedded biometric projects. Featuring professional optical technology and precise module manufacturing, the R307 captures clean, high-quality fingerprint images at a resolution of 500 DPI . Its built-in finger detection function automatically senses when a finger is placed on the sensor, while its fast 0.2-second scanning speed and 0.1-second verification time make it ideal for real-time applications. The module can store up to 1000 fingerprint templates internally and supports flexible 1:N matching for quick user identification. The R307 communicates via UART (TTL logic level) or USB 2.0 , with a configurable baud rate ranging from 9600 to 115200 bps , making it easy to interface with Arduino, Raspberry Pi, ESP32, STM32, and other microcontrollers . With a working voltage of DC 4.2–6V , low typical current of 50 mA , and a small footprint of just 4.5 × 2.4 × 2 cm , it can be easily integrated into compact end products. Security is a major strength of this module, offering a 5-level adjustable security setting , an extremely low False Acceptance Rate (FAR) of ?0.0001% , and a False Rejection Rate (FRR) of ?1% . These specifications make the R307 highly suitable for access control systems, attendance machines, safety deposit boxes, car door locks, smart home automation, and DIY biometric projects . Users can also conduct secondary development , allowing the sensor to be embedded into a wide variety of custom commercial or industrial products. Specifications Module Type: Optical Fingerprint Sensor Backlight Color: Blue Communication Interface: USB 2.0 / UART (TTL Logic Level) Baud Rate: 9600 bps – 115200 bps (configurable) Verification Speed: 0.1 seconds Scanning Speed: 0.2 seconds Image Resolution: 500 DPI Character File Size: 256 bytes Template Size: 512 bytes Storage Capacity: 1000 fingerprint templates Matching Method: 1 : N Security Level: 5 levels (1 = lowest, 5 = highest) False Rejection Rate (FRR): ? 1% False Acceptance Rate (FAR): ? 0.0001% Operating Voltage: DC 4.2 – 6V Working Current: 50 mA (typical) Peak Current: 75 mA Operating Temperature: -20°C to +50°C Image Capture Surface: 1.5 × 1.1 mm Overall Size: 4.5 × 2.4 × 2 cm (1.77 × 0.94 × 0.79 in) Cable Length: 15 cm Applications Access Control Systems – Secure entry for doors, gates, and restricted areas Attendance Machines – Reliable employee and student time tracking Safety Deposit Boxes – Biometric protection for valuables and documents Car Door Locks – Keyless biometric vehicle access Smart Home Automation – Personalized control of locks, lights, and devices Bank and Office Security – Identity verification for restricted areas POS and Cash Register Systems – User authentication for staff access Embedded Biometric Products – Suitable for OEM and custom integration DIY and Educational Projects – Compatible with Arduino, Raspberry Pi, and ESP32 IoT Security Devices – Adds biometric authentication to connected products