Confirm the complete 1772-SD2 part number and series from the product label.

Allen-Bradley 1772-SD2 Remote I/O Scanner Tap Unit
- Part number
- 1772-SD2
- Availability
- In stock
- Category
- PLC & I/O Systems
- Subcategory
- Remote I/O & Distributed I/O
1772-SD2 product information
Allen-Bradley 1772-SD2
Provides dependable remote I/O connectivity for legacy Allen-Bradley PLC-2 control systems.
| Brand | Allen-Bradley |
| Model | 1772-SD2 |
| Voltage | 120V AC nominal system supply |
| Country of Origin | United States |
| Weight | 1.2 kg |
| Dimensions | 178 x 127 x 76 mm |
| Warranty | 6 months |
| Certifications | UL, CSA, CE |
| SKU / MPN | 1772-SD2 |
| What’s in the box | 1772-SD2 Remote I/O Scanner Tap Unit and installation documentation |
| Product Type | Remote I/O scanner tap unit |
| Product Family | PLC-2 industrial control system |
| I/O Interface | Allen-Bradley 1771 Remote I/O |
| Communication | Remote I/O link |
| Mounting | PLC chassis mounted |
| System Supply | 120V AC nominal |
Key benefits: Enables distributed I/O control, supports legacy system integration, simplifies remote device connectivity, and provides rugged industrial operation.
Typical applications: Factory automation, conveyor systems, material handling, packaging machinery, and legacy PLC-2 remote I/O installations
Lifecycle: Legacy product; new old-stock units may be available and replacement evaluation is recommended
Confirm the complete system—not only the model number
Industrial components can differ by series, firmware, voltage, network, terminal base, memory, accessories and approvals. A matching front label does not by itself guarantee a drop-in replacement.
Send the existing system or application information when compatibility matters.
State quantity, preferred condition, destination and required delivery date.
Include a clear nameplate photo when the revision is uncertain.
Know what is being quoted
The offered condition and inspection scope should be written into the quotation. Do not assume every source uses condition terms in the same way.
New product
Ask whether the unit is factory sealed, open-box or unused surplus, and confirm packaging when relevant.
Unused surplus
Confirm packaging, storage evidence, label condition and included accessories.
Refurbished product
Confirm the refurbishment source, functional test scope, cosmetic condition and warranty.
Used product
Request clear photographs and available inspection or functional-test information.
Technical references
Manufacturer documentation should be used for engineering, installation, safety and certification decisions. This page supports identification and sourcing; it does not replace the manufacturer manual.
Common product questions
Find answers about product identification, compatibility, condition options and quotation requirements.
How can I identify the correct product?
Check the complete part number, series, revision and product label before requesting a quotation.
How should compatibility be confirmed?
Compare the electrical specifications, communication requirements, accessories and existing system documentation.
Which condition options are available?
Products may be offered as new, surplus, refurbished or used. The quotation will state the supplied condition.
What information is needed for a quotation?
Provide the part number, quantity, preferred condition, destination and required delivery date.
Send the part number and receive a clear quotation.
Include quantity, acceptable condition, destination and timing. A label photo helps verify the request.

Industrial product5094-OB32
Industrial product141210-318
Industrial productTS800NU
Industrial productDcs800-r00-9901