Hardware Connection: Module connects via a serial communication interface, directly with 3.3V or 5V power microcontrollers. Communication: Module data transmission pins (pin 2 TD) connect to the data bit machine's receiving end (RXD), data receiving module pins (pin 3 RD) connect to the data transmitting bit machine (TXD). For -232 level (e.g.: PC machine) for PC communication, increase level conversion between the module and the host computer. Application: Computer Condition: New Type: Logic ICs Power Consumption: 7.2W Model Number: FPM10A Voltage Supply: DC 3.6 ~ 6.0V / 3.3V supply Current: Less than 120mA Operating Current: Less than 140mA Fingerprint Image Time: Less than 1.0 seconds Window Size: 14 x 18 mm Matching Mode: Matching mode (1:1) Search Mode (1: N) Signature File: 256 bytes Template Files: 512 bytes Storage Capacity: Max 200 Security Level: Five (from low to high: 1,2,3,4,5) False Acceptance Rate (FAR): Less than 0.001% (security level 3) False Rejection Rate (FRR): Less than 1.0% (security level 3) Search Time: Less than 1.0 seconds (1:500, the average) PC Interface: UART (TTL logic level) or USB2.0 / USB1.1 Communication Baud Rate (UART): (9600 x N) where N = 1 ~ 12 (default value N = 6, i.e. 57600bps) Working Environment: Temperature: -20 - +50 ℃ Relative Humidity: 40% RH-85% RH (non-condensing) Storage Environment: Temperature: -40 - +85 ℃ Relative Humidity: Less than 85% H (non-condensing) Dimensions (L x W x H): Split: Fingerprint sensor: 56 x 20 x 21.5mm All-in-one: 56 x 20 x 21.5mm Circuits (e.g.: MAX232 circuit) Color: Black Material: Metal + PC Package Contents: 1 * Fingerprint Reader Sensor Module 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.