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 fingerprints fingers, and old fingers, all have high recognition rate. 3. The main application areas: can be embedded into a variety of end products, such as: access control, attendance, deposit box 4. Fingerprint capacity 1500 pieces,.Waterproof grade IP65, Pixel 192x192. 5. The R503Pro have R503Pro-UART(TTL) type. Note: 1. R503Pro: IP65 Waterproof 2. RGB LED Color, have 7 colors which can be controlled by . 3. R503Pro is not compatible with R503. Model: R503Pro Type: Capacitive Fingerprint Module Interface:UART(TTL) Resolution: 508 DPI Voltage: R503Pro-UART: DC 3.3V R503Pro-USB: DC 5V Fingerprint Capacity: 1500 Sensing array: 192x192 pixel Working current: 20mA Standby current: Typical touch standby voltage: 3.3V, Average current: 2uA Fingerprint 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: SH1.0-6Pin LED Control: YES LED Color: RGB Scanning Speed: Less than 0.2 second Verification Speed: Less than 0.3 second Matching : 1:1 1:N FRR: 1percent FAR: 0.001percent Work environment: 20 - -60 Work Humidity: 10-85percent Anti-static capacity: 15KV Abrasive resistance intensity: times Communications baud rate (UART): (9600 x N) where N = 1 - 12(default N = 6, ie 57600bps) Colour:silverandblack Material:Plastic and stainless steel Package Contents: 1 x Module Sensor Scanner Only 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.