eI/O-120PoE Ethernet to 4 Optically Isolated Inputs / 4 Form C Relay Outputs Digital Interface Adapter, with PoE (802.3af)
eI/O-120PoE Ethernet to 4 Optically Isolated Inputs / 4 Form C Relay Outputs Digital Interface Adapter, with PoE (802.3af)

Part# 120PoE

(eI/O PLC-8)

Ethernet to 4 Optically Isolated Inputs / 4 Form C Relay Outputs Digital Interface Adapter, with PoE (802.3af)


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Control and monitor four optically isolated inputs and four high-current Form C relay outputs via any 10/100BaseT Ethernet connection with the eI/O-120PoE digital I/O module. Inputs can range from 5-30VDC and provide 3500VDC (2500VAC RMS) isolation to ground, while the high-current Form C relays can switch up to 6A loads at 250VAC and up to 5A at 60VDC. 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 eI/O-120PoE is a Class 0 (IEEE 802.3af-2003) Power over Ethernet device. This allows power and data to be transferred over a single CAT5 cable and eliminates the need for an external power supply. With PoE, power can be supplied by power sourcing equipment including PoE injectors (midspans) and switches (endspans).

Ready for DIN rail mounting, the eI/O-120PoE includes a removable plastic clip that snaps onto 35mm DIN rail. The clip can also be attached to any flat surface such as a wall or under a counter. 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 use the Sealevel SeaMAX API software libraries from your application program. Sealevel's SeaMAX software drivers and utilities make installation and operation easy using Microsoft 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.
Host Interface Ethernet
# of Ports 4/4
Brand/Family eI/O
PoE Powered Yes
Digital I/O Isolated Inputs, Form C Relay Outputs
Number of Inputs/Outputs 4 Inputs, 4 Outputs
Power Requirement PoE Class 0 @ 5W (IEEE 802.3af)
Input Range 5-30 VDC
Input Isolation 2500 VAC RMS, 3500 VDC
Input Impedance 6.2 K Ohms (in series)
Output Power DC 240W, AC 300 VA
Contact Voltage 60VDC max., 200VAC max., (5VDC min.)
Contact Current AC 6A max.
Contact Current DC <30 VDC @ 6A max., >30 VDC @ 700mA max., (100mA min.)
Contact Operate Time 10ms max.
Contact Release Time 5ms max.
Field Wiring 16-30 AWG
Operating Temperature 0 - +70C
Storage Temperature -50 - +105C
Humidity Range 10 - 90% Relative Humidity, Non-Condensing
Dimensions 4.5 (L) x 3.5 (W) x 1.3 (H)
  • • 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 60VDC
  • • Field wiring is simplified via removable 3.5mm terminal blocks compatible with 16-30 AWG wire
  • • Ready for DIN rail mounting, removable plastic clip snaps onto 35mm DIN rail or can be attached to walls and other surfaces with optional screws
  • • Optional removable spring-clamp terminal blocks available for I/O connections
  • • PoE version allows power and data over a single CAT5 cable, eliminating the need for an external power supply
  • • Status LEDs display power, Ethernet link and I/O activity
  • • Sealevel SeaMAX software supports Microsoft Windows operating systems
  • • Housed in rugged, attractive plastic enclosure
  • • Includes 7' CAT5 Ethernet cable (Item# CA246)









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The Digital I/O Handbook
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The Digital I/O Handbook (*Free)
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