Catalogue → Allen-Bradley → SLC 500 digital I/O (1746)
1746-IO8
Allen-Bradley · PLC I/O module · SLC 500 digital I/O (1746) confirmed
The Allen-Bradley 1746-IO8 is a PLC I/O module in the SLC 500 digital I/O (1746) range. 4 in / 4 out combination.
What 1746-IO8 sells for
No auction result recorded for this part yet. We publish hammer prices only where we have watched a lot through to close — never an estimate in their place.
See 1746-IO8 listed on eBay → Asking prices, not sold prices. We may earn a commission.
| Manufacturer | Allen-Bradley (also Rockwell Automation, AB) |
|---|---|
| Family | SLC 500 digital I/O (1746) |
| Category | PLC I/O module |
| Without separators | 1746IO8 |
| Notes | 4 in / 4 out combination; verified: Rockwell 1747-SG001 SLC 500 selection guide |
What changes what 1746-IO8 is worth
Same catalogue number, different money. These are the attributes that separate two otherwise identical 1746-IO8 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.
Questions
What is a 1746-IO8?
The Allen-Bradley 1746-IO8 is a PLC I/O module in the SLC 500 digital I/O (1746) range. 4 in / 4 out combination.
What changes what a 1746-IO8 is worth?
Two 1746-IO8 units with the same catalogue number can be worth different amounts. What separates them: series letter, tested or untested. Series letter on the label. Later series are not always backward compatible and sell for more. Tested / as-is / new-in-box. The single biggest multiplier on used price.
Where do you find the series or revision on a 1746-IO8?
Series letter: Printed on the label, usually right after the catalogue number, as "SER A". Tested or untested: Not on the plate. It comes from whoever pulled the unit, and it moves the price more than anything printed.
Who makes the 1746-IO8?
Allen-Bradley makes the 1746-IO8. The same equipment is sold and labelled as AB, A-B, Allen Bradley, Allen-Bradley, Rockwell, Rockwell Automation.