Abstract: The present invention relates to construction foil (1), in particular for use in the flat roof area, with a single- or multilayer structure (3) comprising a carrier layer (2), wherein the carrier layer (2) comprises an electronic unit (4) and at least one first connecting means (7) projecting beyond the outer side (8) of the carrier layer (2) and electrically connected to the electronic unit (4), and wherein the first connecting means (7) is designed in such a way that the electronic unit (4) can be detachably connected electrically to an external connection device (9) via the first connecting means (7), preferably without tools.

Abstract: The present invention relates to construction foil (1), with a multilayer layer structure (3) comprising a carrier layer (2) and a textile layer (11), wherein an electronic unit (4) comprising at least one moisture sensor (6) is printed on the outer side (13) of the carrier layer (2), wherein the textile layer (11) is water-permeable, preferably water-absorbent, wherein the electronic unit (4) is provided between the carrier layer (2) and the textile layer (11), and wherein the moisture sensor (6) is in direct contact with the textile layer (11), in particular is arranged on the textile layer (11).

Abstract: The present invention relates to construction foil (1), in particular for use in the flat roof area, with a single- or multilayer structure (3) comprising a carrier layer (2), wherein the carrier layer (2) comprises an electronic unit (4) and at least one first connecting means (7) projecting beyond the outer side (8) of the carrier layer (2) and electrically connected to the electronic unit (4), and wherein the first connecting means (7) is designed in such a way that the electronic unit (4) can be detachably connected electrically to an external connection device (9) via the first connecting means (7), preferably without tools.

Abstract: A device includes a number of N?2 pump chambers having N separate chamber volumes, each of which may be altered independently of the other(s). The volume changes of the pump chambers occur periodically with substantially the same frequency (f). The device further includes N actuators for changing the respective chamber volumes and valves for establishing the pumping direction, and finally a common inlet and outlet. The pump chambers of the device are disposed in series one behind the other, and the forms of the periods of volume changes of all pump chambers are substantially identical. Moreover, an ideal phase offset PHI of approximately 180° exists between the volume change of the chamber volumes of two sequential pump chambers.