1、Multi Function: This optical fingerprint module can complete fingerprint collection, fingerprint registration, fingerprint comparison and fingerprint search function independently. 2、Self Learning: In the process of fingerprint recognition, the latest fingerprint characteristic values will be integrated into the fingerprint database. 3、Autocorrection: This fingerprint reader module supports 360 degrees autocorrection and auto identification, which allow you to press the correctly registered finger at any angle. 4、Low FAR: This fingerprint reader sensor features maximum 0.0001% low false accept rate, that is, when randomly pick one fingerprint in 1 million fingerprints to compare with the others, only one fingerprint in 1 million will be successfully identified and passsed. 5、Low FRR: This optical fingerprint reader adopts 0.0001% low false rejection rate. Among the existing 1 million fingerprints, if 1 million fingerprints are compared 1 million times in any order, only one identification fails. 1 x Optical Fingerprint Module Item Type: Optical Fingerprint ModuleMaterial: ABSCPU: 120MHz Main Frequency, 1M Bits Flash Memory, 128KB SRAMFingerprint Collector: CMOS Image Sensor, Optical Total Reflection PrincipleFingerprint Registration Capacity: 1000 by Default and 3000 Can be ExpandableFalse Recognition Rate (FAR): < 0.001 % (Security Level: 3)False Rejection Rate (FRR): < 0.1% (Security Level: 3)Comparison Method: (1: N) and (1:1) ComparisonFingerprint Template Size: 570 BytesSecurity Level Setting: Level 1 to Level 5. Factory Setting: Level 3Fingerprint Feature Extraction Time: < 0.45 Seconds(1: N) Comparison Time (When 3000 Fingerprints Are Fully Registered): < 1.5 SecondsCommunication Interface: UART, 3.3V TTL LevelSerial Communication Parameters:No Parity= None, One Stop Bit = 1Flow Control None = NoneBaud Rate: 9600, 19200, 38400, 57600, 115200 (bps)Factory Setting: 115200bpsOperating Voltage: Win Voltage (DC 3.3V±10%)Working Current: Less Than 100mAInterface DefinitionRST: Reset the Module, and the Low Level is Valid (this Pin is Needed in the Case of Uninterrupted Power Supply to the Module, and It is Recommended to Be Suspended in Other Cases)VIN: Main Power Supply for the Fingerprint Module, 3.3V by DefaultGND: Power GroundRX/DP: Module Receives Data PinsTX/DN: Module Sends Data Pins+ 3.3V: Finger Detection Function Circuit Power SupplyWakeup: Output Pin of Finger Detection Function, Output High Level when Finger Presses OnNote: 1. in Addition to the Fp Cancel Instruction in the Communication Process, the Sending and Receiving of Other Instructions Must Follow the Principle of One Sending and One Reception, and the Interval Between the Two Instructions is Required to Be Greater Than or Equal to 20ms, Less Than This Time May Cause the Subsequent Instructions Not to Respond. 2. when Transmitting More Than 24byte Data from the Module Target to the Host, Use the Response Data Packet. 3. when Host Does Not Receive a Reply, Please Do Not Send Instructions to Target. 4. the Module Indicator Light Does Not Need to Be Controlled by Default, and the Collector Indicator Will Be Automatically Turned on when Processing Instructions, and if the Correct Fingerprint is Collected, the Indicator Will Be Automatically Turned Off; if the Correct Fingerprint is Not Collected, the Collector Light is Always On. when Using, You Can Also Use the Sensor Led Control Command to Control the Turn on or off the Collector Indicator According to Your Needs. 5. This Device Has a Password Protection Mode, After the Device Password is Set, Most of the Instructions Cannot Be Used Without Password Confirmation. if You Do Not Set a Device Password, You Can Use All Commands Without Password Confirmation. 6. the Module Will Automatically Enter the Initialization when It is Powered On, the Time Needs About 300ms, It is Recommended to Send Instructions to the Module After Waiting for 350ms After Powering on the Module. 7. This Module Has Automatic Finger Detection Function, That Is, in Low Power Mode, There is a Finger Pressed on the Fingerprint Collector, and the Wakeup Pin of the Module Will Output a High Level. the Specific Operation is As Follows:(1). the + 3.3v of the Module Should Be Kept in Power and Cannot Be Disconnected.(2). when Low Power Consumption is Needed, Disconnect the Vin Power Supply. when a Finger Touches the Glass of the Fingerprint Collector, the Wkp Pin of the Module Will Output High Level, and then Change Back to Low Level After Finger is Away.(3). After Detecting the High Output Level of Wkp, when the Fingerprint Module Needs to Work, Switch on the Vin Power Supply, and Send Instructions to the Module After 350ms.