The 'PACE-Bus' (RS485) 'Desk call station (RS485, 8+1)' PT2009-A1 is designed to be placed on a desk.
It can be extended with up to 3 'Call station extension (RS485, 8)' PTO2006-A1, each with 8 buttons to a maximum of 32 buttons. See Call station extension PTO2006-A1.
The buttons can be labeled with insertable labels. The label can be accessed by opening the label lid.
All buttons are freely accessible and can't be locked.