1. With the function of self-learning. During the fingerprint identification process, the newly extracted fingerprint is successfully recognized and merged into the fingerprint database. So that the user can use it more effectively during use. 2. Can realize 360 degree automatic correction recognition function. Press the module at any angle, and the correct registered finger can be passed by comparison. 3. Has low false accept rate with the maximum of 0.001%, making the recognition and reliable. 4. Support for platform secondary development, and support for windows all series. 5. This USB model design is convenient to charge and use. Supports up to 1000 fingerprint users, offering you much convenience. The fingerprint window adopts advanced waterproof technology, no worry about the influence of wet hands. Item Type: Optical fingerprint module Condition: Brand new Model: A33 Main Frequency: 120Mhz Flash Memory: 1M Bits SRAM: 128KB Fingerprint Collector: Optical acquisition Size of Fingerprint Image: 640x480 (pixel), 500DPI Registration Capacity of Fingerprint: Defaults to 1000 pcs False Accept Rate(FAR): Less than 0.001% False Rejection Rate(FRR): Less than 0.001% Comparison : 1:N and 1:1 comparison Size of Fingerprint Template: 570 Setting of Security Level: Level 1 to level 5 can be set Factory Setting Value: Level 3 Communication Interface: UART, 3.3V-TTL level or USB communication Serial Communication: No Parity=NONE, 1 Stop Bit=1 Baud Rate: 9600, 19200, 38400, 57600, 115200 () Factory Setting: 115200bps Working Voltage: DC3.3V +/- 10% A33 Pin Function: : Reset the module, active low VIN: Fingerpr Colour:black Material:ABS Package Contents: 1 x biometric Only the above package content, other products are not included. Note: Light 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.