Allen-Bradley 1775-S4A PLC-3 I/O Scanner-Programmer Interface Module
Condition: Used. Pulled from a working environment. Sold with our "no-hassle" 30-day return warranty.
The 1775-S4A scanner is a required module for the PLC-3 programmable controller. When you are setting up your PLC-3 system, you must insert a 1775-S4A scanner into the PLC-3 Main Processor Chassis.
- Four I/O communication channels
- I/O scan priority
- RS232C communication channel
- Status LED indicators
- Thumbwheel switch
- Backup connector