R307 Optical Fingerprint Reader Module

The R307 Optical Fingerprint Reader Module is a high-performance biometric sensor designed to capture and verify fingerprints with high accuracy and speed. Featuring an optical sensor, this module stores fingerprint templates internally and quickly authenticates users, making it perfect for security, access control, and attendance applications.

This module is widely used in smart door locks, office access systems, lockers, and IoT security projects. With its compact design, it integrates seamlessly with Arduino, NodeMcu, and Raspberry Pi for DIY electronics and IoT automation systems.

✨ Key Features

• Optical fingerprint detection technology

• Stores up to 162 fingerprint templates

• Fast verification (<1 second per scan)

• UART TTL communication for microcontroller interfacing

• Durable, compact, and easy-to-integrate design

• Ideal for Arduino, NodeMcu, Raspberry Pi, and IoT projects

• Reliable for security systems, attendance, and smart home automation

🔧 Technical Specifications

🛠 Applications

Security & Access Control

• Smart door locks and cabinets

• Office, laboratory, or school access control

• Safes and lockers

• IoT-based security automation

Attendance Systems

• Employee attendance management

• School/university biometric attendance

• Event access monitoring

DIY Electronics & IoT Projects

• Arduino-based fingerprint authentication
  👉 https://electroway.org/product-category/arduino-and-accessories/arduino-boards/

• NodeMcu IoT security systems
  👉 https://electroway.org/product-category/iot-and-smart-solutions/iot-modules/nodemcu/

• Raspberry Pi secure IoT applications
  👉 https://electroway.org/product-category/electronic-accessories/mounts-and-cases/raspberry-pi-mounts-and-cases/

⚠ Precautions

• Use a stable power supply (3.6–6V DC) to avoid damage.

• Keep the optical sensor surface clean and scratch-free.

• Avoid direct sunlight or moisture exposure.

• Do not touch the sensor with sharp objects.

• Ensure proper alignment and positioning for accurate fingerprint detection.

🔗 Internal Category Links

• Electronics Components: https://electroway.org/product-category/electronics-components/

• Arduino & Accessories: https://electroway.org/product-category/arduino-and-accessories/

• Tools & Accessories: https://electroway.org/product-category/tools-and-accessories/

• ICs: https://electroway.org/product-category/ics/

🎥 YouTube Tutorial Video

Watch Video:https://www.youtube.com/shorts/nSimihzY4yM

4. Product Summary

The R307 Optical Fingerprint Reader Module is a fast, reliable, and compact biometric sensor for secure authentication, attendance, and IoT projects. Compatible with Arduino, NodeMcu, and Raspberry Pi, it provides accurate fingerprint recognition and easy integration for DIY and professional applications.