For Busch-Wächter® 220 MasterLINE. For Busch-Wächter® 220 MasterLINE select. For Busch-Wächter® 220 MasterLINE premium. For Busch-Wächter® 280 MasterLINE. For Busch-Wächter® 220 MasterLINE KNX. For Busch-Wächter® 220 MasterLINE KNX premium. For detecting two sides of the house in combination with Busch-Wächter® 280. For ceiling mounting of the Busch-Wächter®. For increasing the angle of inclination of the Busch-Wächter® 220/280. Installation takes place on the corner of the house, on the wall or under the ceiling. For surface-mounted or flush-mounted cable routing.