1. Stainless steel thread design, easy to install.2. The flexibility to adapt to the conditions was the fingers, whether it is dry fingers, wet fingers, light texture fingers, and old fingers, all have high recognition rate.3. The main application areas: can be embedded into a of end products, such as: access control, attendance, safety deposit box4. Fingerprint capacity 1500 pieces,.Waterproof grade IP65, Pixel 192*192.5. The R503Pro have R503Pro-USB type.Note:1. R503Pro: IP65 Waterproof2. RGB LED Color, have 7 colors which can be controlled by .3. R503Pro is not compatible with R503.Model: R503ProType: Capacitive Fingerprint ModuleInterface: USBResolution: 508 Voltage: R503Pro-UART: DC 3.3V R503Pro-USB: DC 5VFingerprint Capacity: 1500Sensing array: 192*192 pixelWorking current: 20mAStandby current: Typical touch standby voltage: 3.3V, Average current: 2uAFingerprint module external size: Diameter 28 (mm)Fingerprint module inner size: Diameter 25 (mm) (M25)Fingerprint module height: 19 (mm)Collection area: Diameter 15.5 (mm)Connector: SH1.0-6PinLED Control: YESLED Color: RGBScanning Speed: Less than 0.2 secondVerification Speed: Less than 0.3 secondMatching : 1:1; 1:NFRR: 1%FAR: 0.001%Work environment: 20 ---60Work Humidity: 10-85%Anti-static capacity: 15KVAbrasive resistance intensity: 1 million timesCommunications baud rate (UART): (9600 x N) where N = 1 ~ 12(default N = 6, ie 57600bps)Colour:silver+blackMaterial:Plastic + stainless steelPackage Contents:1 x Module Sensor ScannerOnly the above package content, other products are not included.Note: Light reflection 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.