Unit Fingerprint2 is a high-performance fingerprint sensor unit integrating an STM32 core controller and an A-K323CP integrated fingerprint recognition module. It uses a semiconductor capacitive sensor and provides multiple functions, including fingerprint acquisition, feature extraction, registration, comparison, storage, and retrieval. The high-resolution capacitive fingerprint sensor offers high- recognition capabilities. It has a capacity of 100 fingerprints. The module features a built-in fingerprint recognition algorithm that adapts to various conditions, including wet and dry fingers. It offers flexible user fingerprint data management, high data security, and fast search and location capabilities. This unit uses a UART communication interface for easy integration with various control platforms. It features a colorful light ring and power indicator for interactive status indication. It is suitable for rapid development and integration in a variety of scenarios, including smart door locks, access control and attendance, identity authentication, financial payments, and small security systems. Parameters: MCU: STM32G031G8U6 Fingerprint Sensor Module: A-K323CP Fingerprint Sensor Resolution: 508 dpi Image Pixels: 80*208 Acquired Image Size: 8230 Bytes (80*208/2=8320, 4 bits per pixel) Fingerprint Capacity: 100 Fingerprints Fingerprint Data Size: 7262 Bytes/Finger Communication Method: UART 115200 bps @ 8N1 Power Consumption: Operating Mode: 40mA (Breathing Light On); 37.25mA (Breathing Light Off) Sleep Mode: 14.11mA Applications: Smart Door Locks Access Control and Attendance ID Authentication Financial Payments Small Security Color: White Material: plastic Package Contents: 1*Fingerpr 2 Unit 1*Connecting cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.