Switchbox NGJKM561 is intended for the push button controls. The three bus button incomings will via an external relay activate the three supplies for light fittings. The switch box can be fixed e.g. to the installation plate by screws, max. ø 6 mm, two holes in the middle (distance between holes 75 mm) or four holes in the corners of the box. The boxes can also be fixed with two cable ties from the clamps on the box base. The third way of fixing is by using the so-called snap-on pins, for which there are four fixing holes on the box base. Weight 296 g.