With central fixing (Ø 16 mm) and a change-over contact. For safety extra-low voltage or signal voltage. Available versions: square (18x18 mm) and rectangular (24x18 mm). An especially bright and long-lasting illumination is obtained by applying a special 3-fold LED (6 V). The colour caps of this easy-to-use series of switches are equipped with replaceable plates for labelling. A professional series especially for industrial applications. The versions with the white caps light up pink when active. Current rating: 3 A.