grow r307-s dc4.2-6v or dc3.3v 300 capacity optical fingerprint module sensor reader with usb uart interface for access control

integrated image collecting and algorithm chip together, all-in-one 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 the main application areas: can be embedded into a variety of end products, such as: access control, attendance, safety deposit box the difference between r307 and r307-s:
r307 finger capacity: 1000
r307-s finger capacity: 300.syi