1. Integrated collecting and algorithm chip , ALL-in-One 2. The flexibility to adapt to the conditions was the , whether it is dry , wet , light texture fingerprints , and old , all have high recognition rate 3. The main application areas: can be embedded into a variety of end products, such as: access control, attendance, safety deposit box 4. The R503 fingerprint module has a -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 entry time: Less than 0.3 seconds Acquisition window area: 15mm in diameter pixel: 192*192 pixel Resolution: 508dpi Match : Comparison (1:1) Search (1:N) capacity: 200 pieces Security level: (from low to high: 1, 2, 3, 4, 5) Recognition Rate (): Less than 0.0001% Authentic rejection rate (FRR): Less than 1.0% Search time: Less than 0.3 seconds (1:1000, average) 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: 15mm Package Contents: 1 x Barcode Scanner Module Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.