Abstract: A retractable probe housing for attaching to a container (8) filled with medium, the retractable probe housing having a fastening element (7), a measuring probe (1) and an adjusting device. The fastening element (7) is designed to be arranged on the container (8), the measuring probe (1) is designed to receive a sensor, the measuring probe (1) is arranged on the fastening element (7) so as to be movable along a movement axis, and the adjusting device is designed to interact with the fastening element (7) and the measuring probe (1) in order to move the measuring probe (1) along the movement axis. The adjusting device has an electric motor having a rotor (4) and a stator (3), and at least the rotor (4) has a recess, and the movement axis extends through the recess of the rotor.

Abstract: A mounting system for panel-type elements, in particular facade elements, thermoelectric generator elements, thermal solar collectors, photovoltaic modules or solar modules is described, for fastening and securing the element on at least one upper and one lower transverse rail, which are arranged in parallel with and at a spacing from each other for holding an element. The mounting system includes: at least one fastening member fixedly connected to the back side of the element and having at least one anchoring member arranged substantially perpendicularly to the back side for fastening to the upper transverse rail. In the installed position of the element, the fastening member has a smaller distance, relative to a line of slope, from an upper edge of an outer contour of the element than from a lower edge of the outer contour. A panel-type element including a like mounting system, as well as a substructure for holding such an element are also described.