The invention relates to a mobile device for activating an electrical component (50), especially a switch (50), which is arranged inside a housing (10), with a recess (13) provided on the housing (10), at least one elastic key element (31) accessible from the outside, which is accommodated in the recess (13), and the key element (31) has a contact means (32), wherein the contact means (32) is pointing toward the interior of the housing (10), in order to activate the electrical component (50), and a carrier (35) which holds the key element (31) on the housing (10). According to the invention, the carrier (35) and the key element (31) are made of different materials and form a common assembly unit (30) that is fastened to the housing (10).