The 1794-OE4 is an analog output module from Rockwell Automation's Allen-Bradley 1794 Flex I/O series. This module is designed to provide analog output signals to control external devices or processes in a programmable logic controller (PLC) system.

Here are some key features of the 1794-OE4 analog output module:

- It supports up to 4 analog output channels.

- The module provides analog output signals in various formats, such as voltage and current outputs.

- It offers high-resolution digital-to-analog conversion for accurate and precise control of analog signals.

- The 1794-OE4 module is capable of providing either current sourcing or voltage sourcing outputs.

- It can be easily configured and integrated into the Flex I/O system using Rockwell Automation's software tools, such as RSLogix 5000 or Studio 5000.

The 1794-OE4 analog output module is commonly used in industrial automation applications where precise control of analog output signals is required. It is often used in processes such as motor control, valve positioning, flow control, and other applications that require accurate analog control.