AS608 Optical Fingerprint Sensor

The AS608 Optical Fingerprint Sensor is an all-in-one biometric module that captures, processes, and matches fingerprints internally using an onboard DSP chip. It communicates via UART TTL serial with microcontrollers like Arduino, Raspberry Pi, and ESP32.Technical Specifications

• Operating Voltage: 3.3V to 5V DC
• Storage Capacity: Up to 162 templates
• Imaging Time: < 1.0 second
• Default Baud Rate: 57600 bps
• False Acceptance Rate: < 0.001%
• False Rejection Rate: < 1.0%

Pinout Configuration

• VCC: Power Input (3.3V – 5V)
• GND: Ground
• TX: Serial Data Output
• RX: Serial Data Input

How It Works

• Enrollment: Converts two scans into a 512-byte template saved to flash memory.
• Matching: Supports 1:1 matching or 1:N database searching.