SKU: SENS-0576
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ADH-Tech GT521F32 Optical Fingerprint Scanner Module with JST SH Connector

₹2,329.00 (Inclusive of all taxes)
Out of Stock

The ADH-Tech GT521F32 is an optical fingerprint scanner module featuring a 32-bit ARM Cortex-M3 processor for on-board template processing. It communicates via UART (3.3V logic) and USB 2.0 full-speed, offering a storage capacity of 200 fingerprints for secure access control and identification systems.

Features

  • Optical sensor with 450 DPI resolution and 258 x 202 pixel image capture.
  • On-board processing by 32-bit ARM Cortex-M3 MCU for fast 1:1 verification and 1:N identification.
  • Stores up to 200 fingerprint templates with a low False Acceptance Rate (<0.001%).
  • Wake-on-touch function via metal frame contact for low-power operation.
  • Durable 5H hardness scratch-resistant surface for reliable performance.

Out of stock

Description

The GT521F32 module utilizes an optical scanning principle, capturing a visual image of a fingerprint through its integrated digital camera. It is designed to perform reliably with dry, moist, or rough fingerprints, making it suitable for various environmental conditions. The module processes the captured image on-board using its embedded ARM Cortex-M3 processor, converting it into a compact 496-byte template for secure storage and comparison.

Communication is facilitated through a simple UART interface (3.3V TX/RX levels) and a full-speed USB 2.0 port, requiring an external UART-to-USB converter for direct PC connectivity. The module operates from a 3.3V to 6V DC supply, drawing less than 130mA during active scanning, and features a wake-on-touch function that activates the system when a finger contacts the sensor’s metal frame, optimizing power consumption.

Key Features

  • High-Performance Optical Sensor: Features a 450 DPI optical scanner for detailed fingerprint image capture.
  • Advanced On-Board Processing: Powered by a 32-bit ARM Cortex-M3 MCU for rapid template generation and matching.
  • Robust Storage & Security: Securely stores up to 200 fingerprint templates with industry-standard low error rates (FAR <0.001%, FRR <0.1%).
  • Power-Efficient Design: Incorporates wake-on-touch functionality and low operating current (<130mA) for energy-conscious applications.
  • Durable Construction: Equipped with a scratch-resistant surface rated at 5H hardness for long-term reliability.
  • Flexible Communication: Supports UART serial interface (3.3V logic) and USB 2.0 full-speed (12 Mbps) for easy integration.
  • Fast Enrollment: Completes fingerprint enrollment in under 3 seconds for three fingerprints.
  • Broad Compatibility: Compatible with 3.3V and 5V logic systems, ideal for embedded security projects.

Applications

  • Secure physical access control systems for doors, cabinets, and gates.
  • Biometric time and attendance tracking in corporate or industrial environments.
  • User authentication for secure login on kiosks, laptops, or specialized equipment.
  • Integration into IoT security devices and smart home locking mechanisms.
  • Personal identification and verification in banking terminals or vending machines.

Technical Specifications

ModelGT521F32
Sensor TypeOptical Scanner
Image Resolution450 DPI
Image Size258 x 202 Pixels
Fingerprint Storage Capacity200 Templates
Template Size496 Bytes + 2 Bytes checksum
ProcessorARM Cortex-M3 Core MCU
Operating Voltage3.3V to 6V DC (Power Pins)
Logic Level (TX/RX)3.3V
Operating Current< 130 mA
Communication InterfaceUART, USB 2.0 Full-Speed (12 Mbps)
False Acceptance Rate (FAR)< 0.001%
False Rejection Rate (FRR)< 0.1%
Enrollment Time (3 fingerprints)< 3 seconds
Finger Window Size12.9 x 16.9 mm
Surface Hardness≥ 5H
Connector1mm pitch 4-pin JST SH

Frequently Asked Questions

What is the operating voltage range for the GT521F32 fingerprint module?

The module's power pins accept a DC supply from 3.3V to 6V. However, the UART communication pins (TX and RX) operate strictly at 3.3V logic levels. Ensure your host microcontroller or converter matches this 3.3V logic for reliable serial communication.

How do I communicate with this fingerprint sensor module?

Primary communication is via a UART serial interface using simple ASCII commands. The module also has a USB 2.0 full-speed port, but note that an external UART-to-USB converter is required to connect the module's 3.3V TX/RX lines to a computer's USB port. Always use 3.3V logic levels on the serial lines.

What is the difference between the GT521F32 and GT521F52 models?

The primary difference is fingerprint storage capacity. The GT521F32 model can store up to 200 fingerprint templates, while the GT521F52 model offers a higher capacity, typically 1000 templates. All other core specifications, including the optical sensor, processor, and communication interfaces, are identical between the two models.

Does the module require any external components for operation?

For basic UART communication with a 3.3V microcontroller, you only need to connect power, ground, TX, and RX. If you intend to connect to a PC via USB, you will need an external UART-to-USB converter chip or adapter board that supports 3.3V logic levels. The package includes JST SH connectors for wiring.

How durable is the scanning surface of the GT521F32?

The sensor features a scratch-resistant surface with a hardness rating of 5H or higher on the pencil hardness scale. This makes it resistant to everyday abrasions and wear, ensuring long-term optical clarity and reliable fingerprint reading performance in frequent-use applications.

Package Includes

  • 1 x GT521F32 Optical Fingerprint Scanner Module
  • 2 x 1mm pitch 4-pin JST SH Connector

Additional Information

Weight 0.085 kg
Dimensions 6 × 10 × 5 cm