R307 Fingerprint Biometric Sensor with Serial UART for Arduino





This sensor makes fingerprint detection and verification super simple to implement with Arduino, Raspberry Pi and other micro controllers. This is the updated latest model of the #R305FingerPrint Sensor. It offers greater strage capacity(1000 fingerprints compared to 250 of the older R305) and faster scanning speeds. It comes with a TTL UART interface which can be directly connected to a micro controller with no additional external components or circuitry required. The user can store the finger print data in the module and can configure it in 1:1 or 1: N mode for identifying the person. The finger print module can directly interface with 3v3 or 5v Microcontroller.

Since the R307 Fingerprint Sensor is quite popular, you will get numerous tutorials, guides, sample codes and libraries are available on the internet, which will help you use this sensor and get started with it. This sensor is great for building electric safes, home automation projects, attendance related projects, etc

These modules are typically used in safes – there’s a high powered DSP chip that does the image rendering, calculation, feature-finding and searching. Connect to any microcontroller or system with TTL serial, and send packets of data to take photos, detect prints, hash and search. You can also enroll new fingers directly – up to 162 finger prints can be stored in the onboard FLASH memory. There’s a red LED in the lens that lights up during a photo so you know its working.


  • Model: R307 Fingerprint Sensor with Cable
  • Cable included in the package for easy connection to a wide variety of micro controller platforms
  • Handles all the low level tasks of fingerprint detection and verification and the user can directly make use of these features, without worrying about implementing low level functions
  • Lets users store fingerprints. Any new fingerprints detected will be compared to stored fingerprints and the result will be outputted
  • Integrated image collecting and algorithm chip in an ALL-in-One package
  • Fingerprint reader can conduct secondary development, can be embedded into a variety of end products
  • Low power consumption, low cost, small size, excellent performance
  • Professional optical technology, precise module manufacturing techniques
  • Good image processing capabilities, can successfully capture image up to resolution 500 dpi
  • Fingerprint sensor type: Optical
  • Sensor Life: 100 million times
  • Static indicators: 15KVBacklight: bright green
  • Interface: USB1.1/UART(TTL logical level)
  • Serial UART communication baud rate: 4800BPS~115200BPS changeable
  • Image Capture Surface 15×11(mm)
  • Verification Speed: 0.2 sec
  • Scanning Speed: 0.3 sec
  • Character file size: 256 bytes
  • Template size: 512 bytes
  • Storage capacity: 1000 unique fingerprints
  • Security level: 5 (1,2,3,4,5(highest))
  • False Acceptance Rate (FAR) :0.0001%
  • False Rejection Rate (FRR): 0.1%
  • Resolution 500 DPI
  • Voltage :4.2–6VDC (or 3.3V)
  • Working current: Typical 75 mA, Peak 150mA
  • Matching Method: 1: N
  • Operating Environment Temperature: -20 to 45° centigrades

Additional information

Weight 0.1 kg