---
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: "€ 31.27"
currency: EUR
in_stock: true
reviews_count: 2
url: https://www.desertcart.hr/products/476313984-5pcs-pcf8575-io-expander-board-i2c-to-16-io-iic
store_origin: HR
region: Croatia
---

# 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:** € 31.27
**Availability:** ✅ In Stock

## Summary

> 🚀 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?** € 31.27 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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

- • **Compact Yet Mighty:** Tiny 1.57 x 0.83 inch footprint packs powerful IO expansion without clutter.
- • **Seamless I2C Integration:** Easily connect with MCUs like Arduino R3 for rapid prototyping and deployment.
- • **Smart Interrupt Handling:** Open-drain interrupt pin instantly alerts you to input changes—stay ahead of the game.
- • **Expand Your Control Horizon:** 16 quasi-bidirectional IO pins let you manage multiple devices effortlessly.
- • **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
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---

*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-18*