tabs 16 a further tab 19 can be punched from the support plate 14 and can be bent up perpendicular to the support plate 14 which is oriented perpendicular to the tab 16 and rest tightly on the support frame 15 in the bent up position the housing 1 can thus be mounted in a simple and cost effective manner on support plate 14 a similar procedure can also be chosen with such embodiments in which the connecting element is arranged as a cylindrical support body 6 according to fig3 to 5 this will be explained below by reference to fig1 to 15 the type of fastening of the support body 6 to housing 1 and the support plate 5 can occur in an analogous manner in such a way that two tabs 20 are punched out of the support plate 5 and are bent up perpendicular to the support plate 5 the free end section 21 of which is then bent horizontally to the support plate 5 see fig1 and fig1 two holding brackets 28 are thus formed the two holding brackets 28 are arranged in such a way that they can come into engagement with the lateral slits 22 of the support body 6 the support body 6 can therefore be pushed in the direction of the two holding brackets 28 with the horizontal end sections 21 of the holding brackets 28 engaging in the slits 22 in order to further fix the housing 1 to support plate 5 a further tab 23 can.