---
product_id: 71708408
title: "Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3"
brand: "geekstory"
price: "€ 40.23"
currency: EUR
in_stock: true
reviews_count: 13
category: "Geekstory"
url: https://www.desertcart.sk/products/71708408-optical-fingerprint-reader-sensor-module-door-lock-access-control-red
store_origin: SK
region: Slovakia
---

# Serial port compatibility 240 fingerprints stored Red LED status indicator Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3

**Brand:** geekstory
**Price:** € 40.23
**Availability:** ✅ In Stock

## Summary

> 🔐 Unlock the future of secure access with a single touch!

## Quick Answers

- **What is this?** Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3 by geekstory
- **How much does it cost?** € 40.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/71708408-optical-fingerprint-reader-sensor-module-door-lock-access-control-red)

## Best For

- geekstory enthusiasts

## Why This Product

- Trusted geekstory brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Instant Visual Feedback:** Red LED indicator ensures quick status checks at a glance.
- • **Plug & Play Versatility:** Seamlessly integrates with Arduino, STM32, PIC, and more via serial port.
- • **Massive Storage Capacity:** Enroll up to 240 unique fingerprints—perfect for multi-user access control.
- • **Wide Application Spectrum:** Ideal for door locks, safes, attendance systems, and financial security.
- • **Biometric Security, Elevated:** Secure your projects with cutting-edge optical fingerprint recognition.

## Overview

The Geekstory Optical Fingerprint Reader Sensor Module offers advanced biometric security with the ability to store up to 240 fingerprints. Compatible with a broad range of microcontrollers including Arduino Mega2560 and UNO R3, it features a red LED status indicator for instant feedback. Designed for versatile applications such as door locks, safes, and attendance systems, this lightweight module (0.634 oz) is a reliable, plug-and-play solution for modern access control needs.

## Description

desertcart.com : Geekstory Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3 : Electronics

Review: AMAZING! - Really amazing product, just had to search up some code to use it with an arduino and it was a hit for my project
Review: Be cautious when buying - the item was defective when i recieved it... the power won't even show

## Features

- Optical fingerprint sensor secure your project with biometrics. This fingerprint module can be used for fingerprint collection, fingerprint registration, fingerprint comparison and fingerprint search, it's easy to use, so its perfect for any project
- Fingerprint sensor module can work with any microcontroller which with serial port: such as compatible with arduino, 51, avr, stm32, pic, arm, msp430
- Package Includes:1 X Optical Fingerprint Reader Sensor, 2 X Cable. You can enroll new fingers directly - up to 240 finger prints can be stored
- Applications: Fingerprint door locks, safes, guns, financial and other security areas; Access control systems, industrial computers, POS machines, driving training, attendance and other areas of identity; fingerprint payment and other financial areas
- The fingerprint moudle documentation link cannot be displayed. If you need technical documentation, please click “Geekstory” to em-ail us

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07BQ9VNWR |
| Best Sellers Rank | #257 in Security & Surveillance Biometrics |
| Customer Reviews | 3.5 3.5 out of 5 stars (95) |
| Date First Available | March 26, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 0.634 ounces |
| Item model number | GR2904 |
| Manufacturer | Geekstory |
| Package Dimensions | 6.5 x 4 x 0.4 inches |

## Product Details

- **Brand:** Geekstory
- **CPU Manufacturer:** ARM
- **Color:** Red
- **Graphics Card Description:** Integrated
- **Included Components:** Cable, Optical Fingerprint Reader Sensor
- **Memory Storage Capacity:** 240 GB
- **Model Name:** GR2904
- **Personal computer design type:** Barebone
- **Special Feature:** Fngerprint Reader Module
- **Specific Uses For Product:** Access Control, Financial Security, Identity Verification, Fingerprint Payment

## Images

![Optical Fingerprint Reader Sensor Module Door Lock Access Control Red Light for Arduino Mega2560 UNO R3 - Image 1](https://m.media-amazon.com/images/I/61SSOt+bWVL.jpg)

## Questions & Answers

**Q: Can anyone assist in locating RPi2b code that i can use with this module?**
A: Please Check the product details page, the first of the five characteristics has been updated.Please refer to the document link.Any question please feel free to contact.

**Q: Does this work with the adafruit library?**
A: Yes

**Q: Does the led constantly flash?**
A: No, the led only turn on when you put fingerprint on the scan area after uploading code

**Q: Does this scanner work with the arduino pro micro and/or the arduino nano or just the arduino uno R3 thats in the description?**
A: It can work with any microcontroller which with serial port:such as Arduino,51,avr,stm32,pic,arm,msp430

## Customer Reviews

### ⭐⭐⭐⭐⭐ AMAZING!
*by A***L on May 24, 2025*

Really amazing product, just had to search up some code to use it with an arduino and it was a hit for my project

### ⭐ Be cautious when buying
*by S***E on October 18, 2025*

the item was defective when i recieved it... the power won't even show

### ⭐⭐⭐⭐⭐ Review
*by R***S on January 24, 2025*

Perfecto para proyectos y uso profesional

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**Shop now:** [https://www.desertcart.sk/products/71708408-optical-fingerprint-reader-sensor-module-door-lock-access-control-red](https://www.desertcart.sk/products/71708408-optical-fingerprint-reader-sensor-module-door-lock-access-control-red)

---

*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-02-20*