The invention relates to a housing (1) for an electrical appliance, comprising: a housing base (10), which has a connecting portion (4) for connecting the housing (1) to a machine, a technical apparatus or a building wall, and at least one fastening element (2), which is provided on an outer face of the connecting portion (4), wherein the fastening element (2) is designed such that said fasteningelement can be interlockingly and/or frictionally connected to a corresponding retaining element of the machine, the technical apparatus or the building wall, and wherein: the housing (1) can be closed by means of a housing cover; the connecting portion (4) is designed to be resiliently deformable and has, on an inner face, an unlocking element (3) which can be actuated by a user, is operatively connected to the fastening element (2) and is designed such that the unlocking element can only be actuated from the inside when the housing (1) is open, in order to release the interlocking and/or frictional connection of the fastening element (2) to the retaining element of the machine, the technical apparatus, or the building wall.