The AS608 Biometric Fingerprint Sensor (JM-101B) is a compact and reliable optical fingerprint recognition module designed for secure identification systems. Equipped with an onboard DSP processor, it handles image acquisition, feature extraction, and template matching autonomously—reducing load on the host microcontroller. With support for both 1:1 and 1:N matching modes, it’s an ideal solution for biometric door locks, attendance trackers, and embedded authentication platforms. Its low power requirements, fast recognition speed, and flexible UART/USB interfacing make it a favorite among hobbyists and engineers building secure systems on platforms like Arduino or Raspberry Pi.

Specifications

• Sensor type: Optical (JM-101B)
• Resolution: 500 DPI
• Supply voltage: 3.3V DC
• Working current: Less than 60 mA
• Peak current: Less than 120 mA
• Fingerprint input time: Less than 1 second
• Window area: 15.3 × 18.2 mm
• Template storage: 120 to 162 fingerprints
• Template size: 512 bytes (character file: 256 bytes)
• Matching modes: 1:1 verification and 1:N identification
• False accept rate (FAR): Less than 0.001%
• False reject rate (FRR): Less than 1.0%
• Search time: Less than 1 second (typical 1:500 match)
• Security level: User-selectable (Levels 1–5)
• Communication interface: UART (TTL) and USB 1.1
• Baud rate: 9600 × N (N = 1 to 12), default 57600 bps
• Operating temperature: -20°C to +50°C
• Operating humidity: 40% to 85% RH (non-condensing)
• Storage temperature: -40°C to +85°C
• Module dimensions: 56 × 20 × 21.5 mm

Features

• Integrated fingerprint processing: Enrollment, matching, and storage handled on-module
• Dual recognition modes: Supports both identity verification and search
• Fast identification: Matches fingerprints in under a second
• Compact form factor: Ideal for embedded projects and space-constrained devices
• Microcontroller-friendly: Compatible with popular 3.3V systems
• USB and UART support: Easy integration with PCs or MCUs using TTL or USB converters
• Reliable sensing: Optical sensor with 500 DPI resolution and high matching accuracy
• Adjustable security: Customizable security levels to suit different applications
• Durable operation: Performs well across wide temperature and humidity ranges