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Ethernet to Digital I/O Modules

120E-OEM

Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Board (eI/O PLC-8-OEM)
120E-OEM

120E-OEM features

  • 10/100BaseT Ethernet Modbus TCP interface
  • 4 optically isolated inputs provide protection against surges and ground loops
  • 4 high-current SPDT Form C relays can switch up to 5A at 60V DC
  • Field wiring is simplified via removable 3.5mm terminal blocks compatible with 16-30 AWG wire
  • OEM module with (4) 3/4" aluminum standoffs simplify mounting in your enclosure or cabinet
  • Optional removable spring-clamp terminal blocks available for I/O connections
  • Input power via removable spring-clamp terminal block
  • Status LEDs display power, Ethernet link and I/O activity
  • Sealevel SeaMAX software supports Microsoft Windows operating systems

120E-OEM overview

Control and monitor four optically isolated inputs and four high-current Form C relay outputs via any 10/100Base-T Ethernet connection with the 120E-OEM digital I/O board.

Inputs can range from 5V to 30V DC and provide 3,500V DC (2,500V AC RMS) isolation to ground, while the high-current Form C relays can switch up to 6A loads at 250V AC and up to 5A at 60V DC. Each Form C relay has a discrete common and includes normally-open and normally-closed contact connections. Each pair of inputs shares a common and field wiring is simplified via 3.5mm field removable terminal blocks.

The 120E-OEM receives power via a removable spring-clamp terminal block. The lever-style clamping mechanism requires no tools, which simplifies field installation. The module is powered by your 9V to 30V DC source, or select from a variety of Sealevel power supply options.

Standard operating temperature range of eI/O Ethernet digital I/O modules is 0C to 70C. Status LEDs on the front show power and I/O activity. Additionally, LEDs on the RJ45 connector display Ethernet link and communication activity.

Communicate with eI/O Ethernet digital I/O modules using industry standard Modbus TCP protocol or Sealevel SeaMAX software. The SeaMAX suite is designed to work with third-party applications via the SeaMAX API. Sealevel SeaMAX software drivers and utilities make installation and operation easy using Windows operating systems.

The Sealevel Modbus Connect app for iOS allows you to access the registers, coils and discrete I/O of your Sealevel Modbus devices and is available on the App Store. Use the app to remotely access I/O in the field or for testing and troubleshooting during application development. The Sealevel Mod+ Connect app is an easy-to-use diagnostic utility that allows you to monitor, test and troubleshoot Sealevel eI/O and SeaI/O modules using your iPhone or iPod touch.

Impulse is a leading UK distributor of Sealevel products and can supply you the 120E-OEM along with a wide range of industrial computing and communication products.

For more information about the 120E-OEM, please contact our technical sales team on +44 (0)1782 337 800, or alternatively submit an enquiry.


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  • Over 20 years experience in the automation, embedded and industrial computing industry
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120E-OEM versions - get quote (1 version available)

Product code Description Availability Request a quote
120E-OEM-ROHS Ethernet Modbus TCP to 4 Optically Isolated Digital Input/4 Form C Relay Output Board Request lead time ADD TO QUOTE LIST


Associated peripherals (6 peripherals available)

Product code Description Availability Request a quote
CA246-ROHS CAT5 Patch Cable, 7' in Length - Blue Request lead time ADD TO QUOTE LIST
CA247-ROHS CAT5 Patch Cable, 10' in Length - Blue Request lead time ADD TO QUOTE LIST
CA251-ROHS CAT5 Crossover Cable, 7' in Length - Yellow Request lead time ADD TO QUOTE LIST
REF101 The Digital I/O Handbook - A Practical Guide to Industrial Input and Output Applications Request lead time ADD TO QUOTE LIST
TB-SP06-10-ROHS Terminal Blocks - 6 Position Spring Clamp (10 Pack) Request lead time ADD TO QUOTE LIST
TR106-ROHS UK Mains Power Supply (240V AC to 12V DC @ 500mA, 6W) Request lead time ADD TO QUOTE LIST
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