--- product_id: 476313984 title: "5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I/O Extension Shield Module DC 2.5-5.5V I2C Communication Control 16 IO Ports" brand: "aitiao" price: "B/.45" currency: PAB in_stock: true category: "Aitiao" url: https://www.desertcart.com.pa/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic store_origin: PA region: Panama --- # Wide 2.5-5.5V operating voltage I2C communication with modifiable address 16 IO ports for versatile control 5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I/O Extension Shield Module DC 2.5-5.5V I2C Communication Control 16 IO Ports **Brand:** aitiao **Price:** B/.45 **Availability:** βœ… In Stock ## Summary > πŸš€ Unlock 16x IO Power β€” Control Smarter, Not Harder! ## Quick Answers - **What is this?** 5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I/O Extension Shield Module DC 2.5-5.5V I2C Communication Control 16 IO Ports by aitiao - **How much does it cost?** B/.45 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.pa](https://www.desertcart.com.pa/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic) ## Best For - aitiao enthusiasts ## Why This Product - Trusted aitiao brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Compact Yet Mighty:** At just 4x2.1cm, this shield packs powerful expansion capabilities into a sleek, space-saving design. - β€’ **Instant Interrupt Feedback:** Open-drain interrupt pin alerts you immediately on input changes, keeping your system responsive and efficient. - β€’ **Customizable I2C Addressing:** Modify the default 0x20 address via A1 and A2 pins to avoid conflicts and scale your device network. - β€’ **Expand Your Control Horizon:** 16 quasi-bidirectional IO pins let you effortlessly manage relays, buzzers, LEDs, and buttons with precision. - β€’ **Plug & Play Voltage Flexibility:** Operates seamlessly between 2.5V and 5.5V DC, adapting to your project’s power needs without a hitch. ## Overview The AITIAO 5Pcs PCF8575 IO Expander Board is a compact, high-performance I2C-based module offering 16 configurable input/output pins. Operating between 2.5V and 5.5V with a max current of 100mA, it supports customizable I2C addresses and features an interrupt output for real-time input change detection. Ideal for Arduino R3 and other MCUs, it enables seamless expansion of control interfaces for relays, buzzers, LEDs, and buttons in professional and hobbyist projects alike. ## Description AITIAO 5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I2C I/O Extension Shield Module DC 2.5-5.5V I2C communication control 16 IO portsFeatures:Available library: PCF8575Working voltage: 2.5 - 5.5V DCWorking current: 100mA(MAX)I2C address: 0x20(default),can be modified by installing A1 and A2.16 individually addressable pins.Each pin configurable for input or outputOpen-drain interrupt output pin for input change interrupt.Great for R3 and other MCU to control simple relay, buzzer, button, led.Size: 4x2.1cm/1.57x0.83inchNote: On board 3.3V level converter circuit, if you donot solder VCC-VDD pad, the PCF8575 level is 3.3V. If you solder it, the level will be the same with VCCPackage Included:5Pcs PCF8575 IO Expander Board Module ## Features - Available library: PCF8575; I2C address: 0x20(default),can be modified by installing A1 and A2. - Working voltage: 2.5 - 5.5V DC; Working current: 100mA(MAX) - The PCF8575 is controlled through an I2C interface and features 16-bits of quasi-bidirectional input/output pins. - Open-drain interrupt output pin for input change interrupt. - The PCF8575 IO expander board is great for R3 and other MCU to control simple relay, buzzer, button, led. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B82L2ZCQ | | Best Sellers Rank | #4,841 in Single Board Computers (Computers & Accessories) | | Brand | AITIAO | | Built-In Media | OTHERS | | Compatible Devices | Arduino (R3), Raspberry Pi, Computers, Smartphones, Game Consoles | | Connectivity Technology | I2C | | Customer Reviews | 4.2 4.2 out of 5 stars (8) | | Item Dimensions L x W x H | 1.57"L x 0.83"W x 1.57"H | | Manufacturer | AITIAO | | Model Name | PCF8575 | | Number of Items | 5 | | Processor Count | 1 | | UPC | 701715522879 | | Unit Count | 5 Count | | Warranty Description | 1 | ## Product Details - **Brand:** AITIAO - **Compatible Devices:** Arduino (R3), Raspberry Pi, Computers, Smartphones, Game Consoles - **Connectivity Technology:** I2C - **Included Components:** OTHERS - **Model Name:** PCF8575 ## Images ![5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I/O Extension Shield Module DC 2.5-5.5V I2C Communication Control 16 IO Ports - Image 1](https://m.media-amazon.com/images/I/71CzY2LCO4L.jpg) ## Frequently Bought Together - AITIAO 5Pcs PCF8575 IO Expander Board I2C to 16 IO IIC I2C I/O Extension Shield Module DC 2.5-5.5V I2C Communication Control 16 IO Ports - ALLECIN 20Pcs A3144 3144 Hall Effect Sensor OH3144 AH3144E 3Pins Magnetic Detector - Aobao 10pcs TCA9548A I2C IIC Multiplexer Breakout Board 8 Channel Expansion Board for Arduino --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.com.pa/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic](https://www.desertcart.com.pa/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic) --- *Product available on Desertcart Panama* *Store origin: PA* *Last updated: 2026-08-28*