This USB fingerprint reader scanner is a capacitive biometric access control and attendance system with a capacity of up to 5000 fingerprints and UART interface. It supports independent fingerprint enrollment, verification, and search. The device is compact, low power, and highly reliable. Key features: - Scalable 1:N identification with response time under 2.5 seconds - Automatic correction and identification from any angle - Low false acceptance rate (FAR): < 0.001% - Low false rejection rate (FRR): < 0.1% - Fingerprint extraction time: < 0.45 seconds - Security levels 1 to 5 (default 3) - Communication: UART (3.3V TTL) or USB - Default capacity 1000, expandable to 5000 - Operating voltage: DC 3.3V ± 10% - Working current: < 30mA (instantaneous < 80mA) - Standby current: < 10µA - Operating temperature: -10°C to 60°C Applications: fingerprint access control, attendance machines, fingerprint locks, storage cabinets, and other biometric security systems. Specifications: CPU: 144 MHz Flash: 1M Byte, SRAM: 128KB Fingerprint sensor: Capacitive Image size: 192x192 pixels (508 dpi) Fingerprint template size: 570 bytes Color: Black Material: Plastic Dimensions: approx. 6.5 x 3.8 x 1.7 cm Package includes: 1x fingerprint module Note: Color may vary slightly due to lighting/monitor; measurement error ±1-3cm.