SKU: SENS-0548
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Grow R302 Fingerprint Module - USB 2.0 & UART Interface, 150 Fingerprint Capacity

₹1,579.00 (Inclusive of all taxes)
Out of Stock

The Grow R302 Fingerprint Module integrates a 160×160 pixel optical sensor, image processor, and algorithm chip into a compact, all-in-one unit. It communicates via USB 2.0 or UART (TTL) interfaces, making it compatible with Arduino, Raspberry Pi, and industrial access control systems operating on 4.2-6.0V DC.

Features

  • Integrated optical sensor and algorithm chip for standalone fingerprint processing.
  • Supports USB 2.0 and UART (TTL) serial communication interfaces.
  • Stores up to 150 fingerprint templates with a 508 DPI resolution.
  • 8x8mm effective collection area with high recognition rate for dry, wet, and aged fingers.
  • Compact footprint of 33.4mm x 20.4mm for embedded security applications.

Out of stock

Description

The Grow R302 is a self-contained fingerprint recognition module featuring a 160×160 pixel optical sensing array and an integrated algorithm chip. This all-in-one design handles image capture, processing, and template matching internally, simplifying integration into host systems. It outputs a simple match/no-match result via its serial interfaces.

Operating from a 4.2-6.0V DC supply with a typical current draw of 30mA, the module is designed for reliable performance in access control, time attendance systems, and secure storage applications. Its optical sensor is optimized for a high recognition rate across various skin conditions.

Key Features

  • All-in-one fingerprint sensor, processor, and algorithm module.
  • Dual-interface connectivity: USB 2.0 for direct PC connection and UART (TTL) for microcontroller integration.
  • High-precision 508 DPI optical sensor with a 160x160 pixel array.
  • Robust algorithm ensures high recognition rates for diverse finger conditions.
  • Compact and durable PCB construction for embedded installation.
  • Low power consumption with a typical operating current of 30mA.

Applications

  • Standalone and networked electronic door lock and access control systems.
  • Employee time and attendance tracking terminals.
  • Secure authentication for safety deposit boxes, weapon lockers, and medical cabinets.
  • Embedded biometric security for IoT devices and maker projects.

Technical Specifications

Model NumberR302
Operating VoltageDC 4.2 - 6.0V
Typical Working Current30 mA
Communication InterfaceUSB 2.0, UART (TTL RS232)
Fingerprint Capacity150 templates
Sensor Resolution508 DPI
Sensing Array160 x 160 pixels
Effective Collection Area8 x 8 mm
Module Dimensions33.4 x 20.4 mm (L x W)

Frequently Asked Questions

What are the voltage requirements for the R302 Fingerprint Module?

The module requires a DC power supply between 4.2V and 6.0V. Exceeding 6.0V may damage the internal circuitry. A stable 5V supply is typical for operation with Arduino or Raspberry Pi, with a average current draw of approximately 30mA.

How do I communicate with this module using a microcontroller?

Use the UART (TTL) serial interface. Connect the module's TX and RX pins to your microcontroller's corresponding RX and TX pins, ensuring logic level compatibility (3.3V or 5V). The module uses a proprietary command set over serial for enrollment, deletion, and verification of fingerprints.

What is the fingerprint enrollment and matching process?

The integrated algorithm chip handles all processing. You send commands via serial to enter enrollment mode, capture a fingerprint image multiple times to create a template, and store it in one of 150 slots. For verification, the module captures a new print and compares it against stored templates, returning a match ID or failure result.

Can this sensor reliably read wet or dry fingers?

Yes, the optical sensor and algorithm are designed to maintain a high recognition rate across various finger conditions, including dry, wet, lightly aged, or worn fingerprints. The 8x8mm collection area and 508 DPI resolution provide sufficient detail for the matching algorithm to function effectively.

Package Includes

  • 1 x R302 Fingerprint Module

Additional Information

Weight 0.01 kg
Dimensions 3.34 × 2.04 cm