1. Integrated image acquisition and algorithm chip together, ALL-in-one. 2. Flexible adaptation to various finger conditions: dry, wet, textured, and old fingers, all with high recognition rates. 3. Key application areas: can be integrated into various end products such as access control, attendance systems, and safes. 4. The R503 fingerprint module has a built-in algorithm chip. 5. Interface line distance is 1.0mm, line length is 20cm. Thread diameter is 25mm, easy to install. Power Supply Voltage: DC 3.3V Working Current: 30mA (typ.) Peak Current: 40mA Fingerprint Acquisition Time: Less than 0.3 seconds Acquisition Window Area: 15mm diameter Image Pixels: 192 x 192 pixels Image Resolution: 508 Matching Method: Comparison Method (1:1) Search Method (1:N) Storage Capacity: 200 pieces Security Level: Five (Low to High: 1, 2, 3, 4, 5) False Detection Rate (FAR): Less than 0.0001% Genuine Reject Rate (FRR): Less than 1.0% Search Time: Less than 0.3 seconds (1:1000, average) Host Interface: RS232 (TTL logic level, 3.3V) Communication Speed: (9600xN) where N=1~12 (default N=6, i.e., 57600bps) Working Environment: Temperature: -20°C to +45°C Relative Humidity: 10%RH to 85%RH (non-condensing) Color: Silver Material: Plastic + Metal Size: Fingerprint module height: 15mm Package Contents: 1 x Barcode Scanner Module Only the above package contents are included; other products are not. Note: Light photography and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowed measurement error is +/- 1-3 cm.