Fangrui Product Details 1. Integrated Image Collecting And Algorithm Chip Together, . 2. Fingerprint Reader Can Conduct Secondary Development, Can Be Embedded Into A Variety Of End Products 3. Users Can Conduct Secondary Development, Can Be Embedded Into A Variety Of End Products, Such As: Access Control, Attendance, Safety Deposit Box, Car Door Locks 4. Low Power Consumption, Low Cost, Small Size, Excellent Performance.professional Optical Technology, Precise Module Manufacturing 5. Good Image Processing Capabilities, Can Successfully Capture Image Up To Resolution 500 Dpi.have Finger Detection Function.r307s Use Different Chip When Compare To R307. Model: R307s Type: Optical Fingerprint Module Interface: Usb, Uart(rs232 Ttl) Resolution: 508 Dpi Voltage: Dc 4.2-6v, Or 3.3v Fingerprint Capacity: 1000 Sensing Array: 300000 Pixel Fingerprint Module Size: 52 X 20 X 22 (mm) Effective Collection Area: 11 X 15 (mm) Scanning Speed: Less Than 0.2 Second Verification Speed: Less Than 0.3 Second Matching Method: 1: 1; 1: N Frr: . F