Industrial Automation » Input/Output Modules

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Used peripherals

  • Trusted Seller
    Siemens 322-1HH01-0AA0 Simatic S7 Output

    Siemens 322-1HH01-0AA0 Simatic S7 Output Module

    • Manufacturer: Siemens

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. Please ask any questions you have PRIOR to your purchase. *Your purchase includes a 30 ...

    $50 USD
    Suwanee, GA
  • Trusted Seller
    Square D ROM122 Series B

    Square D ROM122 Series B SY/MAX Analog Output Module

    • Manufacturer: Square D

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $90 USD
    Suwanee, GA
  • Trusted Seller
    Honeywell 621-4500 Input Module

    Honeywell 621-4500 Input Module

    • Manufacturer: Honeywell

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. Please submit all questions PRIOR to auction close. If applicable, we will gladly refun...

    $95 USD
    Suwanee, GA
  • Trusted Seller
    Square D ROM122 Series E

    Square D ROM122 Series E SY/MAX Analog Output Module

    • Manufacturer: Square D

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $90 USD
    Suwanee, GA
  • Trusted Seller
    Allen Bradley 1734-OB8E Series C

    Allen Bradley 1734-OB8E Series C Output Module w/ 1734-MB and 1734-RTB

    • Manufacturer: Allen-Bradley
    • Model: 1734

    PLEASE REVIEW: We would ask that potential buyers please view all of the photographs carefully, and understand what you are buying. All questions must be submitted PRIOR to auction close. Your purchase includes a...

    $175 USD
    Suwanee, GA
  • Trusted Seller
    Square D SY/MAX 8030 ROM

    Square D SY/MAX 8030 ROM 221 Series F2 Relay Output Module

    • Manufacturer: Square D

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $45 USD
    Suwanee, GA
  • Trusted Seller
    Square D SY/MAX 8030 ROM

    Square D SY/MAX 8030 ROM 221 Series H Relay Output Module

    • Manufacturer: Square D

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $45 USD
    Suwanee, GA
  • Trusted Seller
    Square D SY/MAX 8030 ROM

    Square D SY/MAX 8030 ROM 221 Series G Output Module

    • Manufacturer: Square D

    PLEASE REVIEW: We would ask that potential buyers please view the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. *Your purchase includes a 30 ...

    $45 USD
    Suwanee, GA
  • Trusted Seller
    Turck BL20-E-8DI-24VDC-P Input Module

    Turck BL20-E-8DI-24VDC-P Input Module

    • Manufacturer: Turck

    PLEASE REVIEW: We would ask that potential buyers please examine the photographs carefully, and understand what you are buying. All questions should be submitted prior to your purchase. Your purchase is protected...

    $45 USD
    Suwanee, GA
  • Trusted Seller
    Allen-Bradley 1734-232ASCII

    Allen-Bradley 1734-232ASCII

    • Manufacturer: Allen-Bradley
    • Model: 1734

    “This item was removed from working equipment, inspected, cleaned and found in very good condition.”

    $321 USD
    Saint-Jean-sur-Richelieu, Canada
  • 2025 Sealed Allen Bradley 5069-IF8

    2025 Sealed Allen Bradley 5069-IF8 /A Compact Logix 5000 Input Module

    • Manufacturer: Allen-Bradley

    2025 Sealed Allen Bradley 5069-IF8 /A Compact Logix 5000 Input Module In new working and cosmetic condition. Never used. I will ship within one business day. International buyers are welcome Feel free to ask any ...

    $700 USD
    Houston, TX
  • Allen-Bradley 5069-OW16

    Allen-Bradley 5069-OW16

    • Manufacturer: Allen-Bradley
    • Model: 5069

    Sealed Allen Bradley 5069-OW16 /B CompactLogix 16-Ch Relay Output Module In new working and cosmetic condition. Never used. I will ship within one business day. International buyers are welcome Feel free to ask a...

    $600 USD
    Houston, TX
  • Allen-Bradley Allen Bradley 1734-IB8S

    Allen-Bradley Allen Bradley 1734-IB8S

    • Manufacturer: Allen-Bradley
    • Model: 1734

    “Used. Clean unit. See pictures” 2022 Allen Bradley 1734-IB8S Point Guard I/O Safety Module In good working and cosmetic condition. Tested and works. See pictures. I will ship within one business day. Internation...

    $1,000 USD
    Houston, TX
  • Allen-Bradley Allen Bradley 1734-IB8S 1B8S

    Allen-Bradley Allen Bradley 1734-IB8S 1B8S IBBS

    • Manufacturer: Allen-Bradley
    • Model: 1734-IB8S B

    “In good working and cosmetic condition. Tested and works. See pictures.” Allen Bradley 1734-IB8S 1B8S IBBS Ser B POINT I/O Safety Input Module 8 Point In good working and cosmetic condition. Tested and works. Se...

    $1,000 USD
    Houston, TX
  • Output Module Omron C20H-OD219 –

    Output Module Omron C20H-OD219 – New (without original box), 24 VDC

    • Manufacturer: Omron

    Omron C20H-OD219 digital output module, designed for industrial applications with PLC systems. It allows switching of 24 VDC resistive loads, with a capacity of 0.1 A per point and up to 6.4 A per unit. Ideal for...

    $132 USD
    San Diego, CA
1718192021

Overview

Input/Output (I/O) modules are essential components in industrial automation systems. They serve as the interface between various field devices and the control system, allowing the exchange of data and signals. I/O modules can handle both analog and digital inputs and outputs, making them crucial for monitoring and controlling processes in manufacturing, energy, and other sectors.

FAQ

What should I consider when buying an I/O module?

Consider the compatibility with your existing control system, the number of input and output channels, and the type of signals (analog or digital) it supports. Reliability and ease of integration are also important factors.

How do I ensure the I/O module is shipped safely to my location?

Use a reputable shipping service that specializes in electronics. Ensure the module is properly packaged with anti-static materials and secured to prevent damage during transit.

What is the maintenance schedule for an I/O module?

Regular maintenance includes inspecting connections for wear or corrosion, ensuring the module is clean and free from dust, and checking for any firmware updates from the manufacturer. Consult the manufacturer’s manual for detailed maintenance intervals.