Top 30 IO Modules on Amazon (Verified You can Buy)
BestParts DisplayPort Board Port Flex IO Card Small Board Replacement for 400 600 705 800 G3 G4 G5 DM MINI PC SFF MT 906316-001 914968-011 L31839-001 3TK72AA
Ratings for BestParts (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| BestPartsCom | - | ❌ | ❌ | ❌ |
Features
5V to 800V CCFL Inverter Driver Board, 16EPC High Voltage Module for LCD Panel Backlight, LCD Screen Lamp Circuit Power Supply, Compatible with CCFL Tubes
Ratings for AYASOSO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| earlybirds66 | - | ❌ | ❌ | ❌ |
Features
Allen Bradley 1769-Ob16 1769Ob16 I/O Module
Ratings for Allen-Bradley (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| GENUINE-HARDWARE | - | ❌ | ❌ | ❌ |
| HenryAV | - | ❌ | ❌ | ❌ |
Features
Opto 22 SNAP-IDC5-FAST-A - SNAP High-Speed Digital (Discrete) Input Module, 4-Channel, 18-32 VDC/VAC
Ratings for Opto 22 (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Radwell International | - | ❌ | ❌ | ❌ |
Features
Opto 22 IAC5Q AC Input, 4 Channel, 90-140 VAC, 5 VDC Logic, 4000 Vrms I/O Isolation, 5 mA Input Current
Ratings for Opto 22 (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Fuse Bandit | - | ❌ | ❌ | ❌ |
| Mara Industrial | - | ❌ | ❌ | ❌ |
Features
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
Ratings for waveshare (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| waveshare | - | ❌ | ❌ | ❌ |
Features
Waveshare Industrial Modbus RTU I/O Module, Multiple Isolation Protection, Support Voltage & Current Acquisition, Rail-Mount PC Flame-Retardant Protective Case, DC 7V ~ 36V Wide Voltage Power Supply
Ratings for waveshare (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| waveshare | - | ❌ | ❌ | ❌ |
Features
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
Ratings for Pibiger (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Pibiger | - | ❌ | ❌ | ❌ |
Features
MusRock PCA9555 16-Bit I/O Expander I2C GPIO Module 16 Digital Input Output for Arduino
Ratings for MusRock (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| dragonlee | - | ❌ | ❌ | ❌ |
Features
MusRock TCA9555 I2C I/O Expander 16-Bit GPIO Expansion Board for Arduino
Ratings for MusRock (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| dragonlee | - | ❌ | ❌ | ❌ |
Features
HiLetgo 2pcs PCF8575 IO Expansion Board I2C IIC 16 IO Ports I/O Extension Shield 16 Bits SMBus I/O Ports
Ratings for HiLetgo (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| HiLetgo | 5,453 | ❌ | ❌ | ❌ |
Features
2Pcs TCA9555 I2C GPIO Expander Module 16-Bit 16-Channel Digital I/O Board
Ratings for MakerCircuit (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| MakerCircuit US | - | ❌ | ❌ | ❌ |
Features
MCP23017 16-Channel IO Expansion Module With I2C Interface, 3.0V-5.5V, 25MA Drive, For Arduino Industrial Projects(TCA9555)
Ratings for Generic (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ZhiweiDZ | - | ❌ | ❌ | ❌ |
Features
INDUSTRIAL MRO 800FP-MT44 SER. A NSMP-OEM
Ratings for INDUSTRIAL MRO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Ryzen Parts USA | - | ❌ | ❌ | ❌ |
eletechsup DC 12V 24V ESP32 Expansion Board Digital Analog DAC ADC IO WiFi Relay Switch ES32C14 Module for Arduino PLC Smart Home IOT DIY (DC 24V with Shell)
Ratings for eletechsup (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| PrecisionBoard Hub | - | ❌ | ❌ | ❌ |
Features
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)
Ratings for XYGStudy (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| XYGStudy | - | ❌ | ❌ | ❌ |
Features
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.
Ratings for CQRobot (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| CQRobot | - | ❌ | ❌ | ❌ |
Features
NOYITO MCP23017 Serial Interface Module IIC I2C SPI MCP23S17 Bidirectional 16-Bit I O Expander Pins 10Mhz Serial Interface Module
Ratings for NOYITO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| NOYITO TECHNOLOGIES | - | ❌ | ❌ | ❌ |
Features
16 Input 16 Output Expansion Board RS485 16 Channel Remote Control Switch Module DC 6.5‑30V for PLC IO Smart Home Automation
Ratings for LiebeWH (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Danyanty | - | ❌ | ❌ | ❌ |
Features
TKOWTB PCA9698 Module IO Expansion Module GPIO Level Conversion 16-Way Non-MCP23017 PCF8575 PCA9698
Ratings for TKOWTB (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| taiyuanjiandefeisheng | - | ❌ | ❌ | ❌ |
Features
MITSUBISHI QJ61BT11N 156 KBPS-10MB/S, 2048 Remote I/O Link Point, 32 I/O Point, 64 Module MAX Connected, CC-Link V2.0, Master/Local Module, PLC, RS-485
Ratings for MITSUBISHI (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Rylan-MRO | - | ❌ | ❌ | ❌ |
| HenryAV | - | ❌ | ❌ | ❌ |
Features
Allen Bradley 100-C30D10 SER. C 110/120V NSMP
Ratings for Allen-Bradley (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| HenryAV | - | ❌ | ❌ | ❌ |
smartDEN Maxi IoT - I/O Relay Module MQTT, HTTP with DIN Rail Box 24V
Ratings for Denkovi (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Denkovi Assembly Electronics LTD | - | ❌ | ❌ | ❌ |
Features
23IOA08 DC12‑24V 8DI‑8DO NPN PNP Opto‑Isolated SSR RS485 Modbus IO Module,8CH NPN with Box:1
Ratings for eletechsup (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Eletechsup Manufacture Brand Store Store | - | ❌ | ❌ | ❌ |
Features
INDUSTRIAL MRO 193-EEFD SER. C 690V 9-45A (BR/WH) NSMP-OEM
Ratings for INDUSTRIAL MRO (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Ryzen Parts USA | - | ❌ | ❌ | ❌ |
4DI+4AI+4DO Remote IO Module RS485 Ethernet M31-AAAX4440G Analog Switch Acquisition Modbus TCP RTU Firmware Upgrade Host Max 16 Expansion Modules
Ratings for EBYTE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| CDEBYTE | - | ❌ | ❌ | ❌ |
Features
16 Channels IO Extension Module with I2C Interface for MCP23017 Chip 5V 3.3V Compatible 100Khz 400Khz 1.7Mhz Support High Speed IC Interface
Ratings for Hyuduo (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Mixitech-US | - | ❌ | ❌ | ❌ |
Features
Electronics-Salon Slim DIN Rail Mount RJ9 4P4C Breakout Board Interface Module.
Ratings for Electronics-Salon (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Electronics-Salon. | - | ❌ | ❌ | ❌ |
Features
MODBUS-8AO IO Module 8CH Analog Output Acquisition Module 4-20MA/0-10V to RS485 Communication Pure Analog 8CH Output Module
Ratings for MODBUS-8AO IO Module 8CH Analog Output Acquisition Module 4-20MA/0-10V to RS485 Communication Pure Analog 8CH Output Module (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| LangSheng | - | ❌ | ❌ | ❌ |
Features
DB9 Male & Female DIN Rail Mount Interface Module
Ratings for Willwewon (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Huilanwang E-commerce Co., Ltd | - | ❌ | ❌ | ❌ |
Features
Top 10 IO Modules - Verified to Buy (October 2026)
- 1. BestParts DisplayPort Board Port Flex IO Card Small Board Replacement...
- 2. 5V to 800V CCFL Inverter Driver Board, 16EPC High Voltage...
- 3. Allen Bradley 1769-Ob16 1769Ob16 I/O Module
- 4. Opto 22 SNAP-IDC5-FAST-A - SNAP High-Speed Digital (Discrete) Input Module,...
- 5. Opto 22 IAC5Q AC Input, 4 Channel, 90-140 VAC, 5...
- 6. Waveshare Industrial 8-Ch Digital Input & Output Module, DC 7~36V...
- 7. Waveshare Industrial Modbus RTU I/O Module, Multiple Isolation Protection, Support...
- 8. Pibiger JIO Module USB to IO Debug Module,USB to PWM...
- 9. MusRock PCA9555 16-Bit I/O Expander I2C GPIO Module 16 Digital...
- 10. MusRock TCA9555 I2C I/O Expander 16-Bit GPIO Expansion Board for...
Top 10 IO Modules Brands on Amazon
Here is the list of top-rated brands that were evaluated by CherryPicks.
- BestParts
- AYASOSO
- Allen-Bradley
- Opto 22
- waveshare
- Pibiger
- MusRock
- HiLetgo
- MakerCircuit
- Generic
Top 10 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.
- 1. HiLetgo : 12,171 Yearly Feedback , Avg. Ratings 4.8
- 2. Electronics-Salon. : 4,779 Yearly Feedback , Avg. Ratings 4.9
- 3. BestPartsCom : 2,590 Yearly Feedback , Avg. Ratings 4.7
- 4. GENUINE-HARDWARE : 1,517 Yearly Feedback , Avg. Ratings 4.8
- 5. NOYITO TECHNOLOGIES : 1,390 Yearly Feedback , Avg. Ratings 4.9
- 6. waveshare : 1,237 Yearly Feedback , Avg. Ratings 4.7
- 7. Danyanty : 1,070 Yearly Feedback , Avg. Ratings 4.8
- 8. XYGStudy : 994 Yearly Feedback , Avg. Ratings 4.7
- 9. HenryAV : 752 Yearly Feedback , Avg. Ratings 4.5
- 10. Mara Industrial : 667 Yearly Feedback , Avg. Ratings 4.5
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | HiLetgo | 12,171 | 4.8 |
| 🥈 | Electronics-Salon. | 4,779 | 4.9 |
| 🥉 | BestPartsCom | 2,590 | 4.7 |
| 4 | GENUINE-HARDWARE | 1,517 | 4.8 |
| 5 | NOYITO TECHNOLOGIES | 1,390 | 4.9 |
| 6 | waveshare | 1,237 | 4.7 |
| 7 | Danyanty | 1,070 | 4.8 |
| 8 | XYGStudy | 994 | 4.7 |
| 9 | HenryAV | 752 | 4.5 |
| 10 | Mara Industrial | 667 | 4.5 |
[Get] IO Modules Deals (✅Exclusively for Prime)
What does "Amazon Fulfilled" Mean?
Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.
When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.
What does "Prime" Mean?
"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.
Prime members also have access to other benefits, including 2-Day Shipping, Exclusive Member Deals, Prime Video, Buy With Prime, Amazon Music, Prime Gaming, and more.
What does "Free Shipping" Mean?
"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.
Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.
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 October 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 167 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 $63.35, and the top brands are Generic, HiLetgo, waveshare, CQRobot, BestParts, Hyuduo, LiebeWH, Electronics-Salon, XYGStudy, Pibiger And INDUSTRIAL MRO.
Then our expert-level editors reviewed all those quality items and selected the top 30 IO Modules for you, We have researched hundreds of sellers and picked the top sellers for Industrial Electrical, including HiLetgo, Electronics-Salon., BestPartsCom, GENUINE-HARDWARE, NOYITO TECHNOLOGIES, waveshare, Danyanty, XYGStudy, HenryAV, Mara Industrial, Radwell International And CQRobot. The BestParts DisplayPort Board Port Flex IO Card S... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 3 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.
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.