
- New
High-performance R307 Optical Fingerprint Sensor Module with finger detection function for secure access control, biometric authentication, and Arduino projects.
📄 Description
The R307 Fingerprint Sensor Module is a reliable optical biometric reader with a built-in finger detection function, ensuring fast and accurate fingerprint recognition. It can store fingerprint templates in its internal memory and supports both fingerprint enrollment and matching.
With UART TTL interface, the R307 is easy to integrate with Arduino, ESP32, Raspberry Pi, and microcontroller-based systems. Its optical sensor provides high image quality, enabling quick verification for door locks, attendance systems, security devices, and personal projects.
🔧 Specifications:
Model: R307
Sensor Type: Optical fingerprint reader
Interface: UART (TTL)
Operating Voltage: 3.6–6V DC
Working Current: < 120 mA
Fingerprint Capacity: Up to 1000 templates
Matching Method: 1:1 (verification) & 1:N (search)
Image Size: 256 × 288 pixels
Verification Speed: < 1 second
Security Level: Adjustable (1–5)
Dimensions: 54 × 20 × 20 mm (approx.)
Cable: 4-pin connector (VCC, GND, TX, RX)
🎯 Applications:
Biometric door locks
Attendance and time-tracking systems
Secure access control
IoT and automation security projects
Personal identity verification devices
Arduino and Raspberry Pi biometric projects
✅ Why Buy from Engineering Electronics?
Genuine R307 module with finger detection feature
Fully tested and ready to use
Affordable price in Bangladesh
Fast nationwide delivery
📦 Package Includes:
1 × R307 Finger Detection Optical Fingerprint Reader Module
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