1. Integrated image collecting and algorithm chip together, 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, safety deposit box Model : R503-5V Type : Capacitive Fingerprint Module Interface : UART(TTL) Resolution : 508 DPI Voltage : DC 5V Fingerprint Capacity: 200 Sensing array: 192*192 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 23.5 (mm) Fingerprint module height : 19 (mm) Effective collection area : Diameter 15.5 (mm) Connector: MX1.25-6Pin LED Control : YES LED Color : RGB Work Humidity: 10-85% Anti-static capacity: 15KV Abrasive resistance intensity : times Colour:As shown Material:Metal Package Contents: 4 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.