The eFlex Set 2 consists of basic parts that are required to set up all eFlex steles. Only this set is required for the eFlex Basic steles. For the two stele variants Advanced and Comfort, 'Set 3' or 'Set 4' must also be ordered. Two 'Carrier' or 'Multi Carrier' support plates must also be ordered to attach the wall boxes or to close the attachment points.