R307 Optical Fingerprint Module Overview The R307 integrates a dedicated fingerprint algorithm chip and a complete set of fingerprint functions in a compact optical module. It performs fingerprint capture, image processing, feature extraction, template generation and storage, one to one comparison, and one to many search. The module is suitable for embedding into access control systems, attendance devices, safes, vehicle locks, and microcontroller projects. Key benefits Allinone fingerprint processing: onboard algorithm handles image capture, processing, feature extraction, template creation, storage, and matching, reducing host workload. Fast and reliable recognition: image capture and matching are optimized for quick response times, improving user experience for door access and time clocks. Low power and compact: small form factor and low typical current draw make the module suitable for battery powered and spaceconstrained designs. Developer friendly: supports secondary development and can be embedded into a wide range of end products and microcontroller projects, including Arduino compatibility. image quality and accuracy: optical sensor and image processing support up to 500 DPI resolution for reliable template creation. Main features and specifications Functions integrated: fingerprint entry, image processing, feature extraction, template generation, template storage, 1:1 comparison, 1:N search. Sensor resolution: up to 500 DPI image capture. Acquisition window area: 14 by 18 mm. Fingerprint image entry time: under 0.1 s. Search time: under 0.2 s. Matching methods: 1:1 comparison and 1:N search. Template file size: 512 bytes. Storage capacity: up to 1000 templates. Security levels: 5 selectable levels, from low to 1, 2, 3, 4, 5. False Acceptance Rate FAR: less than 0.0001 percent. False Rejection Rate FRR: less than 1.0 percent. Supply voltage: DC 4.2 to 6.0 V. Supply current: typical working current 50 mA; peak current 75 mA. Host interfaces: RS232 at TTL logic level, and USB. Communication baud rate: 9600 times N bps, N equals 1 to 12. Default N equals 6, which gives 57600 bps. Compatibility and development Designed for easy integration into embedded systems and electronic products. Compatible with common microcontroller projects and development boards such as Arduino for rapid prototyping. Serial communication via TTL RS232 or USB simplifies connection to a wide range of hosts. Practical applications Access control: integrate the R307 into door controllers and entry systems to provide secure biometric access. Time and attendance: use in employee attendance terminals to speed up clockin and clockout while reducing buddy punching. Secure storage and vehicle locks: embed in safes, deposit boxes, and car locks for compact biometric authentication. Package contents 1 x R307 Optical Fingerprint Module 1 x Cable Why choose this module The R307 provides a complete, developeroriented biometric sensing and processing solution in a compact, lowpower package. It removes the need for heavy host processing, supports large template storage, and delivers fast, accurate matching for embedded security and access applications.