Abstract: A rotary paddle limit switch for determining a limit level of a fill substance, comprising a housing, which serves for accommodating a motor and a drive shaft. The drive shaft serves for rotation of a rotary paddle secured on the drive shaft, wherein the rotary paddle limit switch has a viewing window for optically checking rotational movement of the rotary paddle and/or the drive shaft.

Abstract: An apparatus for determining and/or monitoring temperature, having: at least one housing, which has at least one inner space; and at least one cable duct for inserting at least one cable into an inner space of the housing; wherein the cable duct has at least one cable entrance and one cable exit opening into an inner space of the housing. The cable duct and the inner space of the housing are embodied and matched to one another in such a manner that the cable to be inserted in the cable duct extends essentially tangentially into the inner space of the housing, and is guided essentially radially in the inner space of the housing.

Abstract: An apparatus for determining and/or monitoring at least one process variable. The apparatus comprises at least one housing, which has at least a housing lower part and a housing lid. The housing lower part and the housing lid are connected together by at least one connecting element.