The Allen-Bradley 1771-IN PLC-5 Digital AC/DC Input Module is compatible with all of its contemporary Allen-Bradley programmable controllers, and interfaces to pushbuttons, limit switches, pilot lights, motor starters, enunciators, and other on/off devices. Indicator lights show the input or output status of the module. They are placed on the front panel and display the ON/OFF condition of each individual input or output. Power is drawn via the 1771 I/O chassis backplane, along with the associated chassis power supply.
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