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 . <EOS>