Eaton easyE4 Control Relay EASY-E4-UC-8RE1, 8 Inputs, 4 Relay Outputs, 12/24 V DC, 24 V AC, Ethernet, DIN Rail

Automation engineers and panel builders use the Eaton easyE4 control relay to implement compact logic control in industrial machines and building automation. The EASY-E4-UC-8RE1 base unit offers 8 digital inputs and 4 relay outputs with changeover contacts, making it suitable for switching loads up to 8 A per relay. Its universal power supply accepts 12/24 V DC or 24 V AC, and the integrated Ethernet port enables Modbus TCP and easyNet communication. The built-in display and real-time clock simplify on-site configuration and time-based control. Programming is done with easySoft 7 software, and the unit can be expanded with up to 11 easyE4 modules.

Key specifications

• Product type: Control relay / compact PLC
• Series: easyE4
• Supply voltage: 12/24 V DC, 24 V AC
• Digital inputs: 8
• Analog inputs: 4 (0-10 V DC, shared with digital inputs)
• Output type: Relay, 4 changeover contacts
• Max output current: 8 A per relay (resistive load)
• Integrated display: Yes
• Real-time clock: Yes
• Ethernet port: 10/100 Mbps
• Communication protocols: Modbus TCP, easyNet
• Expansion capability: Up to 11 easyE4 modules
• Programming software: easySoft 7
• Mounting: DIN rail
• Protection rating: IP20
• Operating temperature: -25 to +55 °C
• Program memory: 1000 function blocks / 1000 lines ladder

Why choose it

This base unit combines a powerful PLC with a user-friendly interface, reducing wiring and programming effort. Its universal voltage input and relay outputs make it adaptable to various control tasks, while Ethernet connectivity enables integration into modern automation networks.

Ideal use cases

• Small machine control and automation
• Building services (lighting, HVAC, access)
• Pump and motor control with relay outputs
• Replacement for traditional relay logic

Good to know

The EASY-E4-UC-8RE1 is part of the easyE4 family, which offers a wide range of expansion modules for additional I/O and communication. Programming with easySoft 7 is intuitive, and the device can be configured directly via its display without a PC.