Best IO Modules (Sep. 2026) - Rated by CherryPicks' Experts

At a Glance: Our Top Picks

Top 1

16 Channels IO Extension Module with I2C Interface for MCP23017 Chip 5V 3.3V ...

9.8
CPR Score
Top 2

PLC debug Board/Simulation board/16-channel Input and Output Test Board/PLC L...

9.6
CPR Score
Top 3

Siemens 6ED1052-1MD08-0BA0 LOGO! 12/24RCE, logic module, disp PS/I/O: 12/24VD...

9.6
CPR Score
Tips


Our team has recommended top 16 IO Modules to make your shopping easy after considering different features about IO Modules reviews of brands, including Generic, SIEMENS, waveshare, CQRobot, Hyuduo, LiebeWH, XYGStudy, Pibiger And INDUSTRIAL MRO. And after researching, 16 Channels IO Extension Module with I2C Interf... is a highly recommended IO Modules item.

* CherryPicks.Reviews is reader-supported, Our editor review, and recommend the best products based on extensive data analysis, if you click on the product links, we may earn a commission through qualifying products purchased.

The Best IO Modules Rated by CherryPicks

Market Overview
IO Modules Reviewed
  • Reviews Analyzed: 250 Items
  • CPR Avg. Rating: 8.6 / 10
16 Products Evaluated
  • Highest Price: $215.00
  • Lowest Price: $7.99
  • Avg. Price: $53.32
Price Disclaimer

Top 16 IO Modules on Amazon (Verified You can Buy)

Top 1

16 Channels IO Extension Module with I2C Interface for MCP23017 Chip 5V 3.3V Compatible 100Khz 400Khz 1.7Mhz Support High Speed IC Interface

Hyuduo
Hyuduoodm8sn3pvw

Ratings for Hyuduo (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Mixitech-US -

Features

[Highly Functional Design] This 16-way expansion module with i2c interface utilizes the powerful microchip mcp23017 chip for enhanced functionality.
[Multi-module Connectivity] With 3 address pins and 8 different addresses that can be set, you can easily connect up to 8 modules via two ic buses, allowing for a maximum of 128 io expansion possibilities.
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Top 2

PLC debug Board/Simulation board/16-channel Input and Output Test Board/PLC Learning Accessories/Switch Quantity IO Module

Generic
XHDMWCWDH-80CCF49C

Ratings for Generic (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
SmartTrend Global LLC -

Features

1. 16‑channel input‑output test for PLC debugging
2. Built‑in indicator lights for status observation
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Top 3

Siemens 6ED1052-1MD08-0BA0 LOGO! 12/24RCE, logic module, disp PS/I/O: 12/24VDC/relay, 8 DI (4AI)/4DO, memory 400 blocks, modular expandable, Ethernet

SIEMENS
6ED1052-1MD08-0BA0
1.9685 x 3.937 x 4.7244 inches
0.59 Pounds

Ratings for SIEMENS (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Industry4u -
Chip and Processor Inc. -
Top 4

Pibiger JIO Module USB to IO Debug Module,USB to PWM ADC IO Tool, 12-bit ADC, 4-Channel IO, Windows Compatible,Comes with English User Manual,Software,CMD Command,Dll for C#,Python Development

Pibiger
JIO
2.0 x 0.5 x 0.2 inches

Ratings for Pibiger (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Pibiger -

Features

VERSATILE FUNCTIONALITY: JIO Module USB to GPIO debug module featuring PWM and ADC capabilities with 4 independent IO channels for comprehensive testing and development
HIGH-PRECISION ADC: JIO Module 12-bit ADC sampling across 4 channels with support for single-ended or differential sampling and real-time curve generation up to 10kHz
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Top 5

MusRock PCA9555 16-Bit I/O Expander I2C GPIO Module 16 Digital Input Output for Arduino

MusRock
PCA9555

Ratings for MusRock (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
dragonlee -

Features

【16-Bit I/O Expansion with I²C Interface】 16 programmable GPIO ports expand microcontroller I²C capabilities; supports 400kHz communication rate; 25mA sink current per channel for direct LED or relay control; compatible with 3.3V and 5V logic systems; Suitable for industrial automation and smart home applications
【Low Power Consumption for Extended Operation】 Standby current ≤ 1μA; 2000mAh battery life in sleep mode; 2.3V to 5.5V wide voltage range; 10kΩ pull-up resistor on INT pin for stable interrupt signal; suitable for portable and energy-efficient designs
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Top 6

Hosrivae MCP23017 I2C GPIO Expander Board 2-Pack, 16 Channel I/O Module with Pull-Up Resistors and Interrupt Output, 25mA Drive Current for Microcontroller Projects and Robotics

Hosrivae
V704HO5B1U50Q898ZOM4ID834387
3.937 x 1.9685 x 0.7874 inches
0.0661 Pounds

Ratings for Hosrivae (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Yecuistore -

Features

Dual MCP23017 Modules : Package contains 2 fully assembled I/O expansion Accessories, each built around the MCP23017 chip for reliable I2C-based 16-bit input/output extension.
Configurable I/O with Interrupt Support: Each of the 16 I/O pins can be individually set as input or output, with selectable internal pull-up resistors and dedicated interrupt output for responsive event-driven designs.
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Top 7

4pcs IO Expander Board Module, MCP23017 I2C to IO Port Expander Module, 16-Bit Serial Interface Sensor IC with Programmable Interrupt

HanOaki
617V11LI04LS7VZ8O0X70MHI9
4.3307 x 2.3622 x 0.3937 inches
0.0397 Pounds

Ratings for HanOaki (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
haodeals -

Features

[WIDE TEMPERATURE RANGE] This I2C to IO port module functions effectively for ACROSS a temperature range of -40°C to 85°C, providing dependable performance under various environmental conditions.
[ VOLTAGE SUPPORT] With an operating voltage range from 8V to 5.5V, it is suitable for multiple applications and compatible with different systems.
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Top 8

Waveshare Industrial 8-Ch Digital Input & Output Module, DC 7~36V Wide Voltage Power Supply, Modbus RTU Protocol, Multiple Isolation Protection Circuits, Rail-Mount Support

waveshare
Modbus RTU IO 8CH

Ratings for waveshare (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
waveshare -

Features

Configurable device address (1~255), multi devices can be cascaded on RS485 bus
Onboard voltage regulator, supports 7~36V wide range power supply. Onboard unibody power supply isolation, provides stable isolated voltage, needs no extra power supply for the isolated terminal
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Top 9

Industrial 8-Ch Ethernet Digital Input/Output Module, Modbus RTU/TCP Protocol, Supports PoE Power Supply, with Various Isolation Protection Circuits @XYGStudy (Modbus POE ETH IO 8CH)

XYGStudy
ESP32-S3-Touch-LCD-1.46

Ratings for XYGStudy (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
XYGStudy -

Features

Part Number: Modbus POE ETH IO 8CH
Industrial 8-Ch Ethernet Digital Input/Output Module, Modbus RTU / TCP Protocol, Supports PoE Power Supply, With Various Isolation And Protection Circuits
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Top 10

MCP23017 16-Channel IO Expansion Module With I2C Interface, 3.0V-5.5V, 25MA Drive, For Arduino Industrial Projects(TCA9555)

Generic
O86U54X44SV4YW549XW1GKF0Q708
2.3622 x 0.7874 x 0.3937 inches
0.022 Pounds

Ratings for Generic (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
ZhiweiDZ -

Features

16-Channel I2C IO Expansion: Expand your microcontroller's capabilities with 16 independently configurable GPIO channels-perfect for Arduino, Pi, and industrial control projects requiring precise input/output management.
Industrial-Grade MCP23017 Chip: Built around the robust MCP23017 driver IC, this module delivers reliable performance -40°C to and125°C operating temperatures for demanding embedded applications.
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Top 11

CQRobot MCP23017 IO Expansion Board Compatible with Raspberry Pi/Micro:bit/Arduino/STM32. I2C Interface Control, 2 Signal Pins Increase to 16 Input/Output Pins, Supports UP to 8 Simultaneous Uses.

CQRobot
CQRMCP23017A
1.7811 x 1.2516 x 1.2516 inches

Ratings for CQRobot (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
CQRobot -

Features

MCP23017 IO Expansion Board Compatible with Arduino Motherboard, Raspberry Pi Motherboard, Micro:bit Motherboard and STM32 Motherboard.
I2C controlled, expands 2 signal pins as 16 I/O pins.
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Top 12

TKOWTB PCA9698 Module IO Expansion Module GPIO Level Conversion 16-Way Non-MCP23017 PCF8575 PCA9698

TKOWTB
0.0176 Pounds

Ratings for TKOWTB (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
taiyuanjiandefeisheng -

Features

The special chip of SX-GPI0-KB module is PCA9698 of NXP company, which is a 40-bit general GPI0 expansion chip with 56-pin TSSOP package.
The improved features include 4000pF drive capability, 5VI/0 port, working current less than 1mA, separate 1/0 port configuration, 400kHz bus clock frequency and smaller packaging form. When the application needs additional I/0 ports to connect ACPI ("Advanced Configuration and Power Interface", a power management standard jointly developed by , and ) power switches, sensors, buttons, LEDs, fans, etc.it can use 1/0 expansion devices to achieve simple solutions.
Top 13

INDUSTRIAL MRO C320KGS20 SER. A2 NSMP-OEM

INDUSTRIAL MRO

Ratings for INDUSTRIAL MRO (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
LiveWire Electrical Supply, Inc. -
Top 14

PUSR 4*AI, 4*DO IO Extender IO Controller Extendable Remote IO Module RS485 Interface Modbus RTU Protocol USR-IO0440

PUSR
4AI4DO

Ratings for PUSR (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
PUSR IOT Technology Limited -

Features

PUSR provides 5 different models of expansion units for users to choose from, please see the table for specific differences between different modules.
The USR-IO modular controller supports standard Modbus RTU for data acquisition and control, making integration into control systems extremely straightforward.
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Top 15

16 Input 16 Output Expansion Board RS485 16 Channel Remote Control Switch Module DC 6.5‑30V for PLC IO Smart Home Automation

LiebeWH
4.7244 x 4.3307 x 1.9685 inches

Ratings for LiebeWH (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Danyanty -

Features

Sixteen Channel Control: This plc expansion board provides 16 channel input to remotely control 16 output channels of another board via the RS485 bus after setting relevant registers.
Smart Home Integration: This 16 channel rs485 module is widely used in PLC IO expansion smart home automation camera surveillance and automatic curtain control applications.
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Top 16

eletechsup 8 Channel Analog Output Module, 0-10V/0-5V, RS485 Modbus RTU, Voltage PLC Remote IO Expansion Board

eletechsup

Ratings for eletechsup (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
QI FAN Electronic Mall -

Features

Versatile Analog Output: This module offers 8 channels of analog output, supporting both 0-10V and 0-5V voltage ranges.
Modbus RTU Communication: Utilizes the RS485 interface and Modbus RTU protocol for seamless integration with PLCs and other industrial systems.
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Top 10 IO Modules - Verified to Buy (September 2026)

Top 10 IO Modules Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

  • Hyuduo
  • Generic
  • SIEMENS
  • Pibiger
  • MusRock
  • Hosrivae
  • HanOaki
  • waveshare
  • XYGStudy
  • CQRobot

Top 8 IO Modules Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.

Rank Name Yearly Feedbacks Avg. Ratings
🥇 waveshare 1,220 4.7
🥈 Danyanty 1,061 4.8
🥉 XYGStudy 994 4.7
4 CQRobot 461 4.9
5 Mixitech-US 412 4.5
6 Chip and Processor Inc. 115 3.9
7 Industry4u 78 4.8
8 Pibiger 10 4.4
View or download top IO Modules seller & rating report
waveshare [1220] Danyanty [1061] XYGStudy [994] CQRobot [461] Mixitech-US [412] Chip and Processor Inc. [115] Industry4u [78] Pibiger [10] waveshare 28% Danyanty 24% XYGStudy 23% CQRobot 11% Mixitech-US 9% Chip and Processor Inc. 3% Industry4u 2% Pibiger 0%

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Why Should You Trust Us?

Now hundreds and thousands of Industrial Electrical supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best IO Modules to buy for new September 2026?

CherryPicks’s Methodology for Evaluating IO Modules

We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Industrial Electrical items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.

We collected and analyzed 172 of IO Modules reviews based on our selection criteria. It helped us shortlist the top qualified and rated IO Modules for Industrial Electrical, We found that most customers choose IO Modules with an average price of $53.32, and the top brands are Generic, SIEMENS, waveshare, CQRobot, Hyuduo, LiebeWH, XYGStudy, Pibiger And INDUSTRIAL MRO

Then our expert-level editors reviewed all those quality items and selected the top 16 IO Modules for you, We have researched hundreds of sellers and picked the top sellers for Industrial Electrical, including waveshare, Danyanty, XYGStudy, CQRobot, Mixitech-US, Chip and Processor Inc., Industry4u And Pibiger. The 16 Channels IO Extension Module with I2C Interf... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 1 consumers with an average rating of 5.0.

We've helped a lot of satisfied users get the right Industrial & Scientific product based on their needs, and save lots of time for them to pick IO Modules to buy.


Written By Ronald M. Bieber

Ronald M. Bieber has rich experience as a science lab instructor in a college and this has provided him with the right requisite knowledge and experience to be a professional in the act of spotting the right and wrong product. He would be helping us make the right choice in this regard.