Abstract: The invention relates to a domestic appliance for food preparation, comprising a motor housing, a working container (2), a cover with a detection body, provided to cooperate with a transmission element (22), arranged in the working container (2), when the cover is locked on the working container (2), the transmission element (22) cooperating with a control element (16), arranged in the motor housing to permit the operation of the appliance when the cover closes the working container (2), arranged on the motor housing. According to the invention, the working container (2) may be placed on the motor housing in several angular positions and the control element (16) is mounted such as to be able to rotate against a return means and comprises several detection cams (40), provided to cooperate with the transmission element (22).