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About the Allen-Bradley 1771
The Allen-Bradley 1771 is a legacy modular I/O system designed for industrial control and machine automation. Built for reliability in harsh environments, it offers broad I/O module variety and simple integration into older PLC installations, making it a common choice for maintenance, retrofit and spare-parts applications.

Allen Bradley,1771-DB,Basic Module REV A/D
- Manufacturer: Allen-Bradley
- Model: 1771
Used and in good condition. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictures to ma...
$48 USDGalion, OH
Allen Bradley,1771-DB,Basic Module REC A/D
- Manufacturer: Allen-Bradley
- Model: 1771
Used and in good condition. Please see pictures for details and condition. You will receive what’s in the pictures. If we have multiples of the same item, the pictures may differ. Please review the pictures to ma...
$48 USDGalion, OH- Trusted Seller
Allen Bradley Basic Module 1771-DB
- Manufacturer: Allen-Bradley
- Model: 1771
You are buying one (1) used Allen Bradley Basic Module 1771-DB. I am listing it as used, but it may not be used.
$250 USDAustinville, VA - Trusted Seller
Allen Bradley Basic Module 1771-DB
- Manufacturer: Allen-Bradley
- Model: 1771
You are buying one (1) Allen Bradley Basic Module 1771-DB. It is new but has no box.
$350 USDAustinville, VA Allen Bradley 1771-DB/B Basic Module REV. C 95678702 (3D-40)
- Manufacturer: Allen-Bradley
- Model: 1771
Allen Bradley 1771-DB/B Basic Module REV. C 95678702 New open box – a spare part from a project – seated on the shelf for a long time Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repa...
$27 USDDuncan, SC- Trusted Seller

Allen Bradley 1771-DB/B .75A 5VDC Basic Module
- Manufacturer: Allen-Bradley
- Model: 1771
Used Allen Bradley 1771-DB/B .75A 5VDC Basic Module Series B Firmware Rev B
$145 USDMillis, MA Allen Bradley 1771-IAD/D 120V AC/DC Input Module 3C-2
- Manufacturer: Allen-Bradley
- Model: 1771
Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...
$26 USDDuncan, SCAllen-Bradley 1771-P7 Series D 120/220V AC Power Supply 1771P7 4E-14
- Manufacturer: Allen-Bradley
- Model: 1771
Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...
$35 USDDuncan, SCAllen Bradley 1771-P7 Series D &C PLC-5 120/220V AC Power Supply Module BIN#2
- Manufacturer: Allen-Bradley
- Model: 1771
1 series C & 4 series D. Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes th...
$87 USDDuncan, SCAllen Bradley 1771-NR/B PLC-5 High Resolution Analog Series Module 3C-2
- Manufacturer: Allen-Bradley
- Model: 1771
****Last module has a chip on the plastic retaining lever - see photo**** Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electro...
$284 USDDuncan, SCAllen Bradley 1771-P2 /A Power Supply 120/220 VAC 1/0.5A 4H
- Manufacturer: Allen-Bradley
- Model: 1771-P2
Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...
$79 USDDuncan, SCAllen-Bradley 1771-OAD 10-120V AC Output Module 3C-34
- Manufacturer: Allen-Bradley
- Model: 1771
Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...
$23 USDDuncan, SCAllen Bradley 1771-OFE1 Ser A and B Analog Output Module Used 12 Bit AUC
- Manufacturer: Allen-Bradley
- Model: 1771-OFE1/B
Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...
$31 USDDuncan, SCALLEN BRADLEY 1771-OFE2 /B ANALOG OUTPUT MODULE (12 BIT) Rev.B 3C-34
- Manufacturer: Allen-Bradley
- Model: 1771-OFE2/B
Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used equipment goes through basic power bench t...
$45 USDDuncan, SCALLEN BRADLEY 1771-OFE2 /B ANALOG OUTPUT MODULE (12 BIT) Rev.A 3C-34
- Manufacturer: Allen-Bradley
- Model: 1771-OFE2/B
**** Corner tab chipped - see photo**** Palmetto Automation Inc. of Duncan SC specializes in buying, selling, and repairing obsolete Used, Refurbished, and New industrial electronic equipment. Most of our used eq...
$45 USDDuncan, SC

