--- 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: "€ 24.82" currency: EUR in_stock: true reviews_count: 2 url: https://www.desertcart.it/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic store_origin: IT region: Italy --- # 2.5-5.5V wide voltage range I2C communication for seamless integration 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:** € 24.82 **Availability:** βœ… In Stock ## Summary > πŸš€ Unlock 16x IO Power & Control Your Next Innovation! ## 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?** € 24.82 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.it](https://www.desertcart.it/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:** Tiny 1.57 x 0.83 inch footprint packs powerful IO expansion without clutter. - β€’ **Seamless I2C Integration:** Easily connect with MCUs like Arduino R3 for rapid prototyping and deployment. - β€’ **Smart Interrupt Handling:** Open-drain interrupt pin instantly alerts you to input changesβ€”stay ahead of the game. - β€’ **Expand Your Control Horizon:** 16 quasi-bidirectional IO pins let you manage multiple devices effortlessly. - β€’ **Plug & Play Voltage Flexibility:** Operates smoothly between 2.5V and 5.5V to fit diverse project needs. ## Overview The 5Pcs PCF8575 IO Expander Board offers 16 quasi-bidirectional IO ports controlled via I2C, operating at a flexible 2.5-5.5V range with a max current of 100mA. Designed for seamless MCU integration, it features an open-drain interrupt pin for real-time input change detection, making it ideal for expanding control over relays, buzzers, buttons, and LEDs in compact projects. ## Description 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 ## 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 | |---------------|-------| | Brand | AITIAO | | Item Weight | 0.634 ounces | | Product Dimensions | 1.57 x 0.83 x 1.57 inches | | Item Dimensions LxWxH | 1.57 x 0.83 x 1.57 inches | | Color | 5PCS PCF8575 Expander Board | | Manufacturer | AITIAO | | ASIN | B0B82L2ZCQ | | Country of Origin | China | | Date First Available | July 29, 2022 | ## Product Details - **Brand:** AITIAO - **Connectivity Technology:** I2C - **Included Components:** OTHERS - **Product Dimensions:** 1.57"L x 0.83"W x 1.57"H - **UPC:** 701715522879 ## 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) ## Customer Reviews ### ⭐⭐ One of the 5 pieces worked *by R***N on April 4, 2023* Three wouldn't respond to i2c commands, one responded, but kept changing the i2c address. Fortunately, I was able to return them, and all 5 of the replacements worked. ### ⭐ 100ma is incorrect current rating *by R***C on May 30, 2023* The correct per channel current rating is 10ma per the OEM datasheet. ## 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.it/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic](https://www.desertcart.it/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic) --- *Product available on Desertcart Italy* *Store origin: IT* *Last updated: 2026-05-14*