The 'Desk call station (analog, 3+1)' PT2008-A1 is designed to be placed on a desk.
The PT2008-A1 is delivered with the PT2008-A1 interface board, which can be mounted on a DIN rail in the cabinet.
The buttons can be labeled with insertable labels which can be accessed by opening the label lids. All buttons are freely accessible and can't be locked.