--- product_id: 584417822 title: "PCF8574T PCF8574 IO Expansion Board Module I2C IO Expander Module (5pcs)" brand: "teyleten robot" price: "E£ 2009" currency: EGP in_stock: true reviews_count: 5 category: "Teyleten Robot" url: https://www.desertcart.com.eg/products/584417822-pcf8574t-pcf8574-io-expansion-board-module-i2c-io-expander-module store_origin: EG region: Egypt --- # I2C interface for seamless connectivity Expand up to 64 I/O pins with cascade support Dual interface: header & seat for versatile integration PCF8574T PCF8574 IO Expansion Board Module I2C IO Expander Module (5pcs) **Brand:** teyleten robot **Price:** E£ 2009 **Availability:** ✅ In Stock ## Summary > ⚡ Unlock Infinite I/O Potential with Effortless I2C Expansion! ## Quick Answers - **What is this?** PCF8574T PCF8574 IO Expansion Board Module I2C IO Expander Module (5pcs) by teyleten robot - **How much does it cost?** E£ 2009 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.eg](https://www.desertcart.com.eg/products/584417822-pcf8574t-pcf8574-io-expansion-board-module-i2c-io-expander-module) ## Best For - teyleten robot enthusiasts ## Why This Product - Trusted teyleten robot brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Instant Compatibility:** Works out-of-the-box with popular platforms like Arduino Uno R3 using native libraries—no hassle, just results. - • **Cascade Without Limits:** Chain multiple PCF8574T modules on the I2C bus to multiply your control points without wiring chaos. - • **Compact Powerhouse Pack:** Get 5 modules in one set, perfect for prototyping or scaling your IoT and embedded projects with professional-grade reliability. - • **Plug & Play Versatility:** Supports both header and seat interfaces, ensuring smooth integration with your Arduino, Raspberry Pi, or other Linux-based systems. - • **Scale Your I/O Like a Pro:** Expand your MCU’s input/output capacity up to 64 pins effortlessly with up to 8 modules working simultaneously. ## Overview The Teyleten Robot PCF8574T is a 5-pack I2C-based I/O expansion module designed to multiply your microcontroller’s input/output pins up to 64 by cascading up to 8 modules. Featuring dual interface options (header and seat), it offers seamless integration with Arduino, Raspberry Pi, and Linux systems. Ideal for overcoming I/O shortages in embedded projects, it supports easy plug-and-play use with native libraries, making it a must-have for professional developers and makers aiming to scale their hardware capabilities efficiently. ## Description Features: I2C interface, I / O expansion module, two I / O scalability 8 I / O (up to 8 simultaneous use the PCF8574 expanded to 64 I / O) Most important feature: 1. Supports two interface types access target board: Pin or row seat, Support I2C bus cascade (by pin header row seat docking methods can be used simultaneously multiple I2C modules) Typical application: I / O resource shortage MCU I / O expansion Main resources: the PCF8574 I2C interface, 8-bit parallel Information includes: Test procedures (AVR, STM8, C8051F) Circuit schematics Related PDF data Review: First time user, it just worked!!! - First time use one of these. I’m impressed on how it just worked with the Arduino Uno R3. I used the internal Arduino library for 7 extra input pins. Review: 8 io lines - I love the interface. Easy io extender. ## Features - based on I2C interface of the I/O expansion module, 2 I/O scalable 8 I/O (can be used at the same time up to 8 PCF8574, expanded to 64 input/output (I/O) - Supports two interface type to access the target board: header or seat;Support I2C bus cascade (through the header, seat docking simulation,, at the same time using a plurality of I2C module) - the I/O resources in short supply and the MCU I/O expansion - PCF8574,I2C interface 8-bit parallel interface ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B098B5CGYJ | | Brand | Teyleten Robot | | CPU manufacturer | NXP | | Compatible Devices | Arduino, Raspberry Pi, Personal Computer, Camera, Smartphone | | Connectivity Technology | I2C | | Connectivity technology | I2C | | Customer Reviews | 4.1 out of 5 stars 18 Reviews | | Global Trade Identification Number | 09339218684193 | | Manufacturer | Teyleten Robot | | Model Name | Teyleten Robot PCF8574T | | Model name | Teyleten Robot PCF8574T | | Operating System | Linux | | Operating system | Linux | | Processor Brand | NXP | | Processor Count | 1 | | RAM Memory Technology | DDR | | Unit Count | 5 Count | | Wireless Compability | Infrared | | Wireless communication standard | Infrared | ## Product Details - **Brand:** Teyleten Robot - **Connectivity technology:** I2C - **Operating system:** Linux - **Wireless communication standard:** Infrared - **Global Trade Identification Number:** 09339218684193 ## Images ![PCF8574T PCF8574 IO Expansion Board Module I2C IO Expander Module (5pcs) - Image 1](https://m.media-amazon.com/images/I/81jDykyPDQL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ First time user, it just worked!!! *by Y***N on 6 August 2025* First time use one of these. I’m impressed on how it just worked with the Arduino Uno R3. I used the internal Arduino library for 7 extra input pins. ### ⭐⭐⭐⭐⭐ 8 io lines *by B***H on 2 July 2025* I love the interface. Easy io extender. ### ⭐⭐⭐⭐ Works great, but I2c connections are different than the standard I2C backpack , caution *by (***W on 26 November 2024* Worked fine, be careful with I2C to backpack connections +5,Gnd Reversed. KArrange KeyPad wires until proper operation. --- ## 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.com.eg/products/584417822-pcf8574t-pcf8574-io-expansion-board-module-i2c-io-expander-module](https://www.desertcart.com.eg/products/584417822-pcf8574t-pcf8574-io-expansion-board-module-i2c-io-expander-module) --- *Product available on Desertcart Egypt* *Store origin: EG* *Last updated: 2026-08-15*