Nameplate

CatalogueAllen-BradleyFlex I/O 1794

1794-OE4XT

Allen-Bradley · PLC I/O module · Flex I/O 1794 confirmed

Manufacturer Allen-Bradley (also Rockwell Automation, AB)
Family Flex I/O 1794
Category PLC I/O module
Without separators 1794OE4XT
Notes verified from FLEX I/O Selection Guide (1794-sg002)

What changes what this is worth

Same catalogue number, different money. These are the attributes that separate two otherwise identical 1794-OE4XT units — check each one before you quote or bid.

Series letter

Series letter on the label. Later series are not always backward compatible and sell for more.

Printed on the label, usually right after the catalogue number, as "SER A".

Tested or untested

Tested / as-is / new-in-box. The single biggest multiplier on used price.

Not on the plate. It comes from whoever pulled the unit, and it moves the price more than anything printed.

Others in Flex I/O 1794

See the whole Flex I/O 1794 family →