1. Integrated image collecting and algorithm chip together, integration 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 of end products, such as: access control, attendance, safety deposit box 4. The R503 fingerprint module has a built-in algorithm chip 5. The interface line spacing is 1.0mm, and length is 20cm. Thread diameter is 25mm, easy to install. Supply voltage: DC 3.3V Working current: 30mA (typ.) current: 40mA Fingerprint image entry time: Less than 0.3 seconds Acquisition window area: 15mm in diameter Image pixel: 192*192 pixel Image Resolution: 508dpi Match : Comparison (1:1) Search (1:N) Storage capacity: 200 pieces Security level: five (from low to high: 1, 2, 3, 4, 5) False Recognition Rate (FAR): Less than 0.0001% Authentic rejection rate (FRR): Less than 1.0% Search time: Less than 0.3 seconds (1:1000, average) Host computer interface: RS232 (TTL logic level, 3.3V) Communication baud rate: (9600xN) where N=1~12 (default value N=6, ie 57600bps) working environment: Temperature: -20Celsius-+45Celsius Relative humidity: 10%RH-85%RH (non-condensing) Colour:silver Material:Plastic + Metal Size:Fingerprint module height: 19mm Package Contents: 1 x Barcode Scanner Module 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.