Industrial Automation » Input/Output Modules

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  • Siemens 6ES7321-1BL00-0AA0 Simatic S7-300 Digital

    Siemens 6ES7321-1BL00-0AA0 Simatic S7-300 Digital Input Module.

    • Manufacturer: Siemens
    • Model: 6ES7

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $41 USD
    Duncan, SC
  • Siemens 6ES7138-4FB03-0AB0 PROFIsafe SIMATIC S7

    Siemens 6ES7138-4FB03-0AB0 PROFIsafe SIMATIC S7 Digital Output Module

    • Manufacturer: Siemens
    • Model: 6ES7

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $50 USD
    Duncan, SC
  • Trusted Seller
    Allen Bradley 5069-ECR CompactLogix 5380

    Allen Bradley 5069-ECR CompactLogix 5380 End Cap *NEW*

    • Manufacturer: Allen-Bradley
    • Model: 5069

    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 ...

    $25 USD
    Suwanee, GA
  • Siemens 6ES7216-2AD23-0XB0 SIMATIC S7-200 CPU

    Siemens 6ES7216-2AD23-0XB0 SIMATIC S7-200 CPU 226 PLC Module

    • Manufacturer: Siemens
    • Model: 6ES7

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $80 USD
    Duncan, SC
  • Siemens 6ES7323-1BH01-0AA0 Simatic S7 SM323

    Siemens 6ES7323-1BH01-0AA0 Simatic S7 SM323 Digital Module

    • Manufacturer: Siemens
    • Model: 6ES7323

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $59 USD
    Duncan, SC
  • Trusted Seller
    Allen Bradley 1734-AENT . 1734-RTB

    Allen Bradley 1734-AENT . 1734-RTB

    • Manufacturer: Allen-Bradley
    • Model: 1734

    Came from working unit 30 day warranty Wr23 Bin1 Mpn: 1734-AENT

    $150 USD
    Allendale, MI
  • Siemens 6ES7 132-6BF01-0BA0 SIMATIC S7

    Siemens 6ES7 132-6BF01-0BA0 SIMATIC S7 Digital Output Module

    • Manufacturer: Siemens
    • Model: 6ES7

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $59 USD
    Duncan, SC
  • Trusted Seller
    Allen Bradley 5069-ECR Ser A

    Allen Bradley 5069-ECR Ser A CompactLogix 5380 End Cap *NEW*

    • Manufacturer: Allen-Bradley
    • Model: 5069

    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 ...

    $25 USD
    Suwanee, GA
  • Trusted Seller
    Allen-Bradley 1734-OB8E Ser C

    Allen-Bradley 1734-OB8E Ser C

    • Manufacturer: Allen-Bradley
    • Model: 1734

    Came from a working unit 30 day warranty Wr38 Bin3

    $40 USD
    Muskegon, MI
  • Trusted Seller
    Allen Bradley 1734-OB4E Ser C

    Allen Bradley 1734-OB4E Ser C

    • Manufacturer: Allen-Bradley
    • Model: 1734

    New 30 day warranty Wr27 Bin 4 Mpn: 1734-OB4E | Country/region of manufacture: Singapore | Oem product description: POINT I/O 4 POINT DIGITAL OUTPUT MODULE | Unspsc: 32151602 | Universal product code (upc): 61259...

    $30 USD
    Muskegon, MI
  • Trusted Seller
    Allen-Bradley Allen Bradley 1734-IV8

    Allen-Bradley Allen Bradley 1734-IV8

    • Manufacturer: Allen-Bradley
    • Model: 1734

    You are buying one (1) Allen Bradley Input Output Module 1734-IV8. It is new in factory packaging.

    $129 USD
    Austinville, VA
  • Trusted Seller
    Allen Bradley 1734-RTB Series A

    Allen Bradley 1734-RTB Series A Terminal Block - Lot of 3

    • Manufacturer: Allen-Bradley
    • Model: 1734

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

    $25 USD
    Suwanee, GA
  • Siemens 6ES7321-1EL00-0AA0 Simatic S7 Digital

    Siemens 6ES7321-1EL00-0AA0 Simatic S7 Digital Input Module, 32xAC120V

    • Manufacturer: Siemens
    • Model: 6ES7

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $176 USD
    Duncan, SC
  • Siemens SIMATIC ET 200SP Digital

    Siemens SIMATIC ET 200SP Digital Output Module

    • Manufacturer: Siemens
    • Model: ET200

    Items are spares/engineering demo hookups that were pulled from an industrial working environment. We repair all types of industrial automation including AC Servo Drives, Servo Motors, Operator Interface Panels, ...

    $72 USD
    Duncan, SC
  • Trusted Seller
    Siemens Dp Interface Module

    Siemens Dp Interface Module

    • Manufacturer: Siemens
    • Model: 6ES7151

    New Open Box Name: Dp Interface Module | Arrival date: 08-25-2025 | Dimensions l x w x h (inches): 7 x 7 x 5 | Capacity: 100 MBIT/S | Weight (lb.): 1 | Available quantity: 1

    $150 USD
    Euclid, OH
7891011

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.