Eaton easyE4 Smart Relays

Base CPUs, expansion I/O, starter boxes and communication modules. Buy by part number or get help configuring your system.

About easyE4

One compact CPU in place of timers, relays and counters

The Eaton easyE4 is a compact, expandable CPU that can replace multiple timers, relays and counters. Each CPU houses a real-time clock and calendar, and supports optional expansion I/O modules to enhance your control and monitoring applications.

easyE4 at a glance

12–24VDC, 24VAC/DC or 100–240VAC powered
Expandable to 12 relay outputs
High-speed counter inputs
Optional text display
Expandable to 24 digital + 8 analog inputs
Ethernet communications
Function blocks or ladder logic
Real-time clock & calendar

Shop easyE4

Selection guide

Build your easyE4 in three steps

1
Pick your supply voltage

Choose a base CPU for 12–24VDC, 24VAC/DC or 100–240VAC. Decide whether you need the built-in display.

2
Count your I/O

If the base unit’s points aren’t enough, add expansion modules and connectors (up to 24 digital + 8 analog inputs and 12 relay outputs).

3
Add communication
Use onboard Ethernet, or add the EASY-COM-RTU-M1 module for Modbus RTU networks.

easyE4 FAQs

Quick answers before you order. Still unsure? Call an engineer.

Yes. easyE4 CPUs can be programmed in function blocks or ladder logic.

The RCX1 version has no display, which lowers the cost when an operator display isn’t needed.

[Confirm with Eaton data before publishing.]

Base units are offered for 12–24VDC, 24VAC/DC and 100–240VAC.
Match the CPU and any expansion modules to your supply.

The easyE4 manual is on our Manuals & Downloads page, alongside other Eaton and Watlow documentation.

Yes. Send your input/output count, supply voltage and communication needs and an application engineer will recommend a configuration.

Need help configuring?

Tell us your inputs, outputs and supply voltage. We'll recommend a CPU and modules.

1.800.472.8812

Talk to a Seagate application engineer

Finish the panel

Programmable Controls

Need more than a smart relay? Compare PLCs and operator interfaces.

Power Supplies & Terminal Blocks

The DIN-rail components that go in the enclosure next to your easyE4.

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