Monitoring device (3, 3.1, 3.2, 3.3) for household appliances, preferably for cooking appliances, comprising: —a housing (33), —at least one camera objective (1, 1.1, 1.2), —at least one fixation unit (2, 2.1, 2.2, 2.3), wherein the fixation unit (2, 2.1, 2.2, 2.3) is adapted for the fastening, preferably for the releasable fastening, the monitoring device (3, 3.1, 3.2, 3.3) on at least one predetermined surface area (34) of at least one predetermined model of a household appliance, and wherein the fixation unit (2, 2.1, 2.2, 2.3) is arranged relative to the camera objective (1, 1.1, 1.2) in order to arrange the camera objective (1, 1.1, 1.2), in a mounted state of the monitoring device (3, 3.1, 3.2, 3.3) on the household appliance, in at least one position of a predetermined distance (d) and/or in a predetermined orientation (α) relative to a predetermined monitoring region (32) of the household appliance.