AS608 Optical Fingerprint Sensor Module | 500dpi Biometric Scanner
AS608 Optical Fingerprint Sensor Module – 500dpi High-Speed Biometric Scanner
The AS608 optical fingerprint sensor module provides reliable biometric authentication for embedded systems. It stores up to 127 fingerprints onboard and communicates via UART, making it suitable for access control, attendance systems, and personal safes. With 500dpi resolution and fast matching, it offers a balance of speed and accuracy for maker and professional projects.
Key Specifications
| Specification | Value |
|---|---|
| Sensor Type | Optical |
| Resolution | 500 dpi |
| Fingerprint Capacity | 127 templates |
| Interface | UART (TTL) |
| Supply Voltage | 3.3V - 5V DC |
| Matching Speed | < 1 second |
What You Can Build With This
- Biometric door lock with solenoid or electromagnetic lock
- Employee attendance system with OLED display and RTC
- Secure password manager that unlocks with fingerprint
- DIY safe or locker with fingerprint authentication
Compatibility
This sensor works with any microcontroller supporting UART (3.3V or 5V logic). Commonly used with Arduino Uno/Nano, ESP32, ESP8266, Raspberry Pi, and STM32. Libraries like Adafruit Fingerprint simplify integration. Operate within 3.3V-5V range; logic level shifting may be needed for 3.3V boards if using 5V supply.
Wiring Notes
Connect VCC to 3.3V-5V, GND to ground, TX to MCU RX, and RX to MCU TX. A voltage divider on the RX line is recommended when using 5V microcontrollers to protect the sensor's 3.3V input. The module includes an onboard LED for visual feedback during enrollment and matching.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Raspberry Pi?
Yes, the AS608 works with Raspberry Pi via UART. Use the serial port and Adafruit's Python library. Ensure the sensor is powered with 3.3V.
Can it store more than 127 fingerprints?
The onboard memory is limited to 127 templates. For larger databases, consider external storage and software matching, but the module's internal matching is limited to its capacity.
Does it work for outdoor installations?
The optical sensor can be affected by direct sunlight and dust. For outdoor use, install it in a weatherproof enclosure and add regular cleaning.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
Ask Soldr above what you can build with this — it knows every Compoden kit this part appears in.
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items