Capacitive Fingerprint Technology: This UART fingerprint sensor uses advanced capacitive fingerprint recognition, offering high-precision biometric identification with low false recognition and rejection rates. Ideal for security and access control applications. UART Serial Communication Interface: Standard UART/TTL interface, easy to connect with mainstream development boards and embedded systems. Simple command set for enrollment, deletion, search and verification, suitable for beginners and professionals. Wide Application Scenarios: Perfect for DIY smart door locks, access control systems, time attendance machines, safe boxes, smart cabinets, and identity verification terminals. Also suitable for teaching, laboratory projects and rapid prototyping. High Security and Reliability: Supports multi-fingerprint storage (capacity depends on model), with stable performance, strong anti-interference ability and fast recognition speed. Ensures safe and convenient biometric authentication for users. Friendly reminder: This fingerprint recognition module is not for direct use; it requires microcontroller development. Using this product requires familiarity with microcontrollers and software development skills. Parameters: Image pixels: 208*80 Resolution (dpi): 508 Sensor abrasion resistance: >200,000 times Storage capacity: 100 fingerprints Matching method: 1:1, 1:N Self-learning present: Yes Fingerprint image acquisition time: <180ms Algorithm search time: <100ms (50 fingerprints) Overall recognition time: <0.6s (50 fingerprints) Startup time: <50ms False acceptance rate (FAR): <0.001% False rejection rate (FRR): <1% Communication interface: UART (3.3V) Communication baud rate (UART): 57600 (default) Power supply voltage: 3.3±0.3(V) Maximum current: <40(mA) /VDD *Shutdown current: <12(uA)/ VADD Operating Temperature: -30°C to 70°C Storage Temperature: -40°C to 85°C Relative Humidity: 20% to 85% (non-condensing) ESD Resistance: Contact discharge ±8KV, non-contact disc