The AS608 Biometric Fingerprint Sensor Module is a compact optical fingerprint recognition device designed for secure authentication systems. It features an onboard DSP processor that performs fingerprint image capture, feature extraction, template storage, and matching directly inside the module. This reduces the processing load on external microcontrollers.
With support for 1:1 verification and 1:N identification, the module is ideal for projects such as biometric door locks, attendance systems, access control devices, and embedded security platforms. It communicates via UART (TTL) or USB, making it easy to integrate with development platforms like Arduino, Raspberry Pi, and other microcontrollers.
 
Specifications
Sensor Type: Optical (JM-101B)
Resolution: 500 DPI
Supply Voltage: 3.3V DC
Working Current: < 60 mA
Peak Current: < 120 mA
Fingerprint Input Time: < 1 second
Window Area: 15.3 × 18.2 mm
Template Storage: 120 – 162 fingerprints
Template Size: 512 bytes (character file: 256 bytes)
Matching Modes: 1:1 verification / 1:N identification
False Accept Rate (FAR): < 0.001%
False Reject Rate (FRR): < 1.0%
Search Time: < 1 second (typical 1:500 match)
Security Level: Adjustable (Levels 1–5)
Communication Interface: UART (TTL) and USB 1.1
Baud Rate: 9600 × N (N = 1–12), default 57600 bps
Operating Temperature: −20°C to +50°C
Operating Humidity: 40% – 85% RH (non-condensing)
Storage Temperature: −40°C to +85°C
Module Dimensions: 56 × 20 × 21.5 mm
 
Key Features
Integrated fingerprint processing (enrollment, matching, storage)
Supports verification (1:1) and identification (1:N) modes
Fast recognition with results in under 1 second
High-accuracy optical sensor with 500 DPI resolution
UART and USB communication for easy integration
Compatible with 3.3V microcontroller systems
Adjustable security levels for different applications
Reliable operation across wide temperature and humidity ranges