Where it is used on the panel
The 3ADT220071R0050: As a member of the ABB HMI Keyads & Keyboards class, the CDP312RD fits the operator-station role: tactile keypad input next to a panel or compact HMI on a control desk, used to drive local commands, setpoint entry, or mode select where a touchscreen alone is not the right tool. The category sits squarely in the HMI tier of the controls stack.
