Allen-Bradley 1794-OE4 Flex I/O Analog Output Module 4-Channel By wayne No Comments on Allen-Bradley 1794-OE4 Flex I/O Analog Output Module 4-Channel 3 Min Read The Allen-Bradley 1794-OE4 provides four configurable analog outputs for precise control. It supports 0-20mA, 4-20mA, +/-10V, and 0-10V signals.