A system comprising: (a) at least a household appliance; and (b) a holding device; and (c) a monitoring device; wherein the at least a household appliance comprises a cooking appliance and preferably a cooking hood (11, 11.1, 11.2) the cooking appliance and/or cooking hood (11, 11.1, 11.2) further comprising a surface, in particular an outer surface, forming at least one predetermined surface area for arranging the holding device, wherein the holding device is adapted for fastening the monitoring device on the cooking appliance and/or the cooking hood (11, 11.1, 11.2), the monitoring device further comprises a housing and at least one camera objective (1, 1.1, 1.2), and wherein the holding device comprises - at least one fastening unit for the releasable fastening of the monitoring device on the holding device, and - at least one fixation unit for the releasable fastening of the holding device on the at least one predetermined surface area of cooking appliance and/or the cooking hood (11, 11.1, 11.2), in a predetermined orientation relative to a predetermined monitoring region of the cooking appliance at an angle (α) between the monitoring region and the at least one camera objective (1, 1.1., 1.2) of the monitoring device. (a) at least a household appliance; and (b) a holding device; and (c) a monitoring device; wherein the at least a household appliance comprises a cooking appliance and preferably a cooking hood (11, 11.1, 11.2) the cooking appliance and/or cooking hood (11, 11.1, 11.2) further comprising a surface, in particular an outer surface, forming at least one predetermined surface area for arranging the holding device, wherein the holding device is adapted for fastening the monitoring device on the cooking appliance and/or the cooking hood (11, 11.1, 11.2), the monitoring device further comprises a housing and at least one camera objective (1, 1.1, 1.2), and the at least a household appliance comprises a cooking appliance and preferably a cooking hood (11, 11.1, 11.2) the cooking appliance and/or cooking hood (11, 11.1, 11.2) further comprising a surface, in particular an outer surface, forming at least one predetermined surface area for arranging the holding device, wherein the holding device is adapted for fastening the monitoring device on the cooking appliance and/or the cooking hood (11, 11.1, 11.2), the monitoring device further comprises a housing and at least one camera objective (1, 1.1, 1.2), and the holding device is adapted for fastening the monitoring device on the cooking appliance and/or the cooking hood (11, 11.1, 11.2), the monitoring device further comprises a housing and at least one camera objective (1, 1.1, 1.2), and wherein the holding device comprises - at least one fastening unit for the releasable fastening of the monitoring device on the holding device, and - at least one fixation unit for the releasable fastening of the holding device on the at least one predetermined surface area of cooking appliance and/or the cooking hood (11, 11.1, 11.2), in a predetermined orientation relative to a predetermined monitoring region of the cooking appliance at an angle (α) between the monitoring region and the at least one camera objective (1, 1.1., 1.2) of the monitoring device. - at least one fastening unit for the releasable fastening of the monitoring device on the holding device, and - at least one fixation unit for the releasable fastening of the holding device on the at least one predetermined surface area of cooking appliance and/or the cooking hood (11, 11.1, 11.2), in a predetermined orientation relative to a predetermined monitoring region of the cooking appliance at an angle (α) between the monitoring region and the at least one camera objective (1, 1.1., 1.2) of the monitoring device.