The R307 fingerprint sensor module delivers fast, reliable, and secure biometric authentication for your electronics projects. Equipped with a high-speed DSP processor and advanced matching algorithms, it supports both 1:1 verification and 1:N identification, making it ideal for access control, time attendance, and identity tracking systems. With a storage capacity of up to 1000 fingerprints, onboard processing, and TTL UART interface, the R307 easily integrates with 3.3V or 5V microcontrollers like Arduino.

Whether you're building a custom lock, a secure login terminal, or a smart automation system, the R307 brings enterprise-level reliability to your fingertips.

Specifications

• Supply Voltage: 4.2 - 6VDC
• Working Current: 50 mA (typ.)
• Peak Current:80 mA
• Input Time: < 1>
• Sensing Window: 14 × 18 mm
• Storage Capacity: 1000 templates
• Template Size: 512 bytes (character file: 256 bytes)
• FAR / FRR: FAR < 0>
• Search Time: < 1>
• Baud Rate: 9600 × N (N = 1–12), default 57600 bps
• Interface: UART (TTL), USB 1.1 via level shifter
• Operating Temp: -20°C to +40°C
• Humidity Range: 40% – 85% RH
• Storage Temp: -40°C to +85°C
• Security Level: Levels 1–5 (user-configurable)

Features

• Dual Matching Modes: 1:1 verification & 1:N identification
• Fast Recognition: Identifies users in under 1 second
• Onboard Processing: Fingerprint entry, storage, and image processing built-in
• High Accuracy: Low false acceptance and rejection rates
• Easy Interface: Connects via UART (TTL) and supports USB1.1 (with MAX232 converter)
• MCU Ready: Works with 3.3V or 5V logic microcontrollers
• Large Storage: Save up to 1000 fingerprint templates
• Configurable Settings: Adjustable baud rate and security level
• Tough & Reliable: Stable performance from -20°C to +40°C

Arduino Guide: CIRCUITSTATE