Abstract: A pneumatic switch (1) having a diaphragm (3) and a switching mechanism operationally connected to the diaphragm (3), the switching mechanism comprises a prestressing element which can be adjusted.

Abstract: A fastening system for fixing and/or aligning at least one sensor element, in particular an active infrared sensor or the accessory parts thereof, such as printed circuit boards, controls, energy sources etc., in a rail element with at least one fastening element, characterized in that the fastening element can be plugged from a front side into the rail element at any desired position. The object is further achieved by providing a fastening system for fixing and/or aligning at least one sensor element, in particular an active infrared sensor or the accessory parts thereof, such as printed circuit boards, controls, energy sources etc., in a rail element with at least one fastening element, characterized in that at least one sensor element and/or the accessory part thereof can be inserted into at least one fastening element in a fashion capable of being re-released and of being aligned with regard to its inclination and the like.

Abstract: A sensor element for opening of doors and gates, with the aim being to allow production of a detection field for identification of people and/or static objects by means of an antenna element, the antenna element is intended to have a flat antenna unit, with a pin-like antenna projecting at least approximately vertically from the flat antenna unit.

Abstract: A pneumatic switch (1) having a diaphragm (3) and a switching mechanism operationally connected to the diaphragm (3), the switching mechanism comprises a prestressing element which can be adjusted.

Abstract: A piggyback plug module (1) for a switch, in particular for a pneumatic switch, having at least two contacts (10) for in each case one electrically conductive connection to a respective connecting contact of the switch; a connection (11) for a connection cable, wherein the contacts (10) are connected to the connection (11), and a functional device (13) held in the piggyback plug module (1).

Abstract: A method for close-proximity operation of a radar sensor for the generation of a usable detection field, for the recognition of people and/or stationary objects by an antenna, whereby the detection field can be altered or adjusted electronically.

Abstract: A sensor element for opening of doors and gates, with the aim being to allow production of a detection field for identification of people and/or static objects by means of an antenna element, the antenna element is intended to have a flat antenna unit, with a pin-like antenna projecting at least approximately vertically from the flat antenna unit.

Abstract: A method for close-proximity operation of a radar sensor for the generation of a usable detection field, for the recognition of people and/or stationary objects by an antenna, whereby the detection field can be altered or adjusted electronically.