--- product_id: 273261211 title: "Optical Fingerprint Reader Sensor Module for Arduino Mega2560 UNO R3 51 AVR STM32 Red Light DC 3.8-7V" brand: "diymall" price: "438 kr" currency: NOK in_stock: true category: "Di Ymall" url: https://www.desertcart.no/products/273261211-optical-fingerprint-reader-sensor-module-for-arduino-mega2560-uno-r3 store_origin: NO region: Norway --- # Fast <0.5s fingerprint input High security Level 3, FAR <0.001% Universal UART serial interface Optical Fingerprint Reader Sensor Module for Arduino Mega2560 UNO R3 51 AVR STM32 Red Light DC 3.8-7V **Brand:** diymall **Price:** 438 kr **Availability:** ✅ In Stock ## Summary > 🔐 Unlock innovation with speed and security — your fingerprint gateway to smarter projects! ## Quick Answers - **What is this?** Optical Fingerprint Reader Sensor Module for Arduino Mega2560 UNO R3 51 AVR STM32 Red Light DC 3.8-7V by diymall - **How much does it cost?** 438 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.no](https://www.desertcart.no/products/273261211-optical-fingerprint-reader-sensor-module-for-arduino-mega2560-uno-r3) ## Best For - diymall enthusiasts ## Why This Product - Trusted diymall brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Red LED Feedback:** Clear visual confirmation with a distinctive red backlight, enhancing user interaction and status awareness. - • **Military-Grade Security:** Enjoy peace of mind with a false acceptance rate below 0.001%, perfect for sensitive access control. - • **Robust Storage Capacity:** Store up to 240 fingerprint templates, ideal for multi-user environments and scalable applications. - • **Plug & Play Compatibility:** Seamlessly integrates with Arduino, STM32, AVR, and more via UART serial port for versatile development. - • **Lightning-Fast Recognition:** Capture and verify fingerprints in under half a second to keep your projects running smoothly. ## Overview This Optical Fingerprint Reader Sensor Module offers rapid fingerprint input (<0.5s) and high security (Level 3 with FAR <0.001%), compatible with a wide range of microcontrollers via UART serial interface. It supports fingerprint collection, registration, comparison, and search, storing up to 240 templates. Ideal for access control, biometric payment, and secure management systems, it features a red LED backlight for clear user feedback and operates on a low voltage DC 3.8-7V supply. ## Description Specifications: Supply voltage: DC 3.8 7.0V Backlight color: red Light way: long light / flashing Supply current: Operating current: <60mA Peak current: <85mA Fingerprint image input time: <0.5 seconds Window area: 15 17mm Matching method: Comparison method (1: 1) Search method (1: N) Characteristic file: 384 bytes Template file: 786 bytes Storage capacity: 240 Security Level: 3 (from low to high: 1,2,3,4,5) False Acceptance Rate (FAR): <0.001% (Security Level 3) Refusal rate (FRR): <1.0% (security level is 3) Search time: <220 ms (1: 240 average) Host interface: UART (TTL logic level) Communication baud rate (UART): (9600 N) bps Where N = 1 12 (default N = 6, ie 57600bps) It can work with any microcontroller which with serial port:such as Arduino,51,avr,stm32,pic,arm,msp430 Many functions:fingerprint collection, fingerprint registration, fingerprint comparison and fingerprint search 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; Private clubs, management software, licensing and other management areas; Medicare recipients, pensioners receive, fingerprint payment and other financial areas. Connection: pin 2 is IN from sensor (GREEN wire) pin 3 is OUT from arduino (WHITE wire) 5V connect sensor (Red wire) GND connect sensor (Black wire) Package Includes: 1 X Optical Fingerprint Reader Sensor 1 X Cable. ## Features - It can work with any microcontroller which with serial port: such as Ar duino,51,avr,stm32,pic,arm,msp430. Pls note: the connection for the fingerprint sensor with 2560 and R3 is different, pls follow the connection diagram shows in the product images. - Functions: fingerprint collection, fingerprint registration, fingerprint comparison and fingerprint search;Applications: Fingerprint door locks, Access control systems, management software, fingerprint payment etc. - What you will get is: 1 X Fingerprint Reader Sensor Module with 1pc plug cable. If any question, pls contact us by email.You can find " Sold by DIYmall" under Buy Now button, click "DIYmall" and you will get to a new page, click "Ask a question". ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077GKPWMN | | Best Sellers Rank | #134,439 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #479 in Home Security & Surveillance Biometrics | | Item model number | FZ2904 | | Manufacturer | DIYmall | | Product Dimensions | 3.1 x 1.8 x 0.3 cm; 41 g | ## Images ![Optical Fingerprint Reader Sensor Module for Arduino Mega2560 UNO R3 51 AVR STM32 Red Light DC 3.8-7V - Image 1](https://m.media-amazon.com/images/I/71Lza4VPrxL.jpg) ## Questions & Answers **Q: Can you store multiple fingerprints?** A: yes, you can store max 240 fingerprints. **Q: Anyone know how u would go about coding this and the setup?** A: There is a link they provide to files and a video. Once I modified the code, it worked fine. **Q: Can this be setup and used with the same software as the Adafruit one?** A: I used the Adafruit Arduino library and it worked perfectly. **Q: How do I access the Raspberry pi code library?** A: You can download code from this link https://drive.google.com/open?id=1D7mYqCRaZkpc7mrxKLrzcEfIVnMnYBrv ## Frequently Bought Together - DIYmall Optical Fingerprint Reader Sensor Module for Ar Duino 2560 R3 Raspberry Pi ESP8266 ESP32 51 AVR STM32 Red Light DC 3.8-7V - Arduino Uno REV3 [A000066] - ATOPLEE Electromagnetic Solenoid Lock,Mini DC 12V 0.43A Door Drawer Tongue Down Slim Design Assembly Magnetic Lock for Cabinet Door Drawer,27X29X18mm --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.no/products/273261211-optical-fingerprint-reader-sensor-module-for-arduino-mega2560-uno-r3](https://www.desertcart.no/products/273261211-optical-fingerprint-reader-sensor-module-for-arduino-mega2560-uno-r3) --- *Product available on Desertcart Norway* *Store origin: NO* *Last updated: 2026-10-27*