Fingerprint Readers descriptions： We use high-quality raw materials, all materials are very suitable for the product, please rest assured to buy. Compact Usb Fingerprint Reader Scanner, Biometric Access Control For Attendance. Features: Multi-function Design, Which Can Independently Complete Fingerprint Collection, Fingerprint Registration, Fingerprint Comparison and Fingerprint Search. Compact Styling is Convenient to Carry and Store, It Features Low Power Consumption, Universal Interface and High Reliability. Scalable Large Capacity 1: N Identification (5000 Fingerprints, Ungrouped Identification, Response Time Less Than 2.5 Seconds). It Can Be Easily Embedded into the User System to Form a Fingerprint Identification Product to Meet Customer Needs. In the Process of Fingerprint Identification, After the Newly Extracted Fingerprint Characteristic Value is Recognized Successfully. Low False Fingerprint Rate: Up to 0.0001%, Low Fingerprint Rejection Rate: Up to 0.0001%. Specifications: CPU: 144 MHz Main Frequency: 1M Bits Flash Memory, 128KB for SRAM Fingerprint Reader: Capacitor Collection Fingerprint Image Size: 192 X 192 (pixel), 508DPI Fingerprint Registration Capacity: Default 1000, Which Can Be Extended to 5000 False Identification Rate (fAR) < 0.001 % Rejection Rate (fRR) < 0.1 % The Fingerprint Template Size: 570 Byte Security Level Settings: Level 1 to Level 5. the Default Value is Level 3 Processing Speed: Fingerprint Feature Extraction Time < 0.45 Seconds Communication Interface: UART, 3.3 V-TTL Level or Usb Communication Serial Communication Parameters: Parity = None; 1 Stop Bit = 1 Flow Control = None Baud Rates: 9600, 19200, 38400, 57600, 115200 (bps Working Voltage: DC 3.3v ±10% Working Current: Less Than 30ma, and the Maximum Value of Fingerprint Collection is Less Than 80ma (instantaneous Current) Dormancy Current: Less Than 10uA Working Environment: Working Temperature: -10 -60 Relative Humidity: 20% - 80% Package Includes: 1 X Fingerprint Reader . Products number : SOMONO81663