3. The main application areas: can be embedded into a variety of end products, such as: access control, attendance, safety deposit box 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 1. Integrated image collecting and algorithm chip together, integration 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., Weight: 0.09038952742 Pounds, Manufacturer: Jaywool