What it is
The ABB 3ADT220071R0004 is an HMI keypad and keyboard module in the ABB human-machine interface line, sized as a small panel-side input device rather than a display. Hardware of this class sits in the PLC and HMI cabinet tier, wired back to the controller as the operator input element for a screen or as a standalone keypad station where a touchscreen is not the right fit.
Sourcing posture
ABB carries the brand record for this code, which keeps it on the normal ABB-channel paperwork for spares and warranty handling.