R305 Fingerprint Sensor Module for Arduino & Raspberry Pi | Biometric Access Control
The R305 Fingerprint Sensor Module for Arduino & Raspberry Pi | Biometric Access Control provides reliable biometric authentication using optical fingerprint recognition. It features high-speed fingerprint matching with storage for up to 1000 fingerprint templates.
Key Features
- Optical fingerprint sensor with high-resolution imaging
- Stores up to 1000 fingerprints in onboard memory
- Fast 1:N identification with sub-second matching
- UART TTL interface for easy microcontroller connection
- Low power consumption with sleep mode
- High security with unique fingerprint matching
- Compact module with integrated sensor and processor
Technical Specifications
| Parameter |
Specification |
| Model |
R305 / AS608 |
| Sensor Type |
Optical (500 DPI) |
| Capacity |
1000 fingerprints |
| Interface |
UART (TTL) |
| Operating Voltage |
3.3V – 6V |
| Baud Rate |
9600 (default) – 115200 |
| Matching Mode |
1:1 and 1:N |
| FAR |
< 0.001% |
| FRR |
< 1.0% |
| Dimensions |
56mm x 20mm x 21mm |
Applications
- Biometric access control and door entry systems
- Employee attendance tracking systems
- Safe and locker security
- Smart door locks for homes and offices
- Personal device security and authentication
- Time and attendance management
Pinout
- VCC: 3.3V-6V power input
- GND: Ground
- TX: UART transmit (module to MCU)
- RX: UART receive (MCU to module)
- WAKE: Wake from sleep (optional)
- TOUCH: Finger detection output (optional)
Important Notes
- Enroll fingerprints using the library examples before deployment
- Keep sensor glass clean for reliable scans
- Sensor must be firmly mounted to prevent vibration during scan
- Store fingerprint IDs in external EEPROM for backup
- R305 and AS608 use same command protocol – libraries are compatible
