Abstract: A sensor module comprises a housing in which a first displacement sensor and a first pressure sensor are arranged. The sensor module can have a second displacement sensor and a second pressure sensor. The module is being provided to monitor a coupling of a motor vehicle, for example a dual coupling of a lorry.

Abstract: A sensor module comprises a housing in which a first displacement sensor and a first pressure sensor are arranged. The sensor module can have a second displacement sensor and a second pressure sensor. The module is being provided to monitor a coupling of a motor vehicle, for example a dual coupling of a lorry.

Abstract: An electronic device is disclosed having a housing with a single opening, and an inner space accessible solely through the opening. A covering plate is positioned within the opening. An electrically conductive contact pin extends through the covering plate and into the inner space.

Abstract: An electrical plug type connector comprises a housing of electrically insulating material and an electrically conductive first contact element for transmitting an electrical signal. The housing of the plug type connector has an encoding lug of electrically insulating material. An electrically conductive second contact element is further arranged in the encoding lug.

Abstract: In a plug-and-socket connector with a locking means having an unlocking ring, it is proposed according to the invention that the first connector element be provided in its end section with an external circumambient groove, in which the unlocking ring is rotatably guided, which ring has pockets distributed across its periphery for the catch projections of catch hooks fixed in the second connector element. The second connector element has a window-like cut-out through which the unlocking ring is accessible and can be turned in the locked state.

Abstract: In a plug-and-socket connector with a locking means having an unlocking ring (5), it is proposed according to the invention that the first connector element (1) be provided in its end section (3) with an external circumambient groove, in which the unlocking ring (5) is rotatably guided, which ring has pockets (10) distributed across its periphery for the catch projections (16) of catch hooks (15) fixed in the second connector element (2). The second connector element (2) has a window-like cut-out (13) through which the unlocking ring (5) is accessible and can be turned in the locked state.

Abstract: A kit for an electrical connection system for photovoltaic solar installations, which includes a plurality of solar cells each with their own electrical connection. The kit includes a number of modules having a plurality of different module types, in each of which different components of the connection system are accommodated. The kit includes at least one module type, having with a connecting device for connecting the external electrical connection of one of the solar cells. A plurality of the modules may be connected together in a selectable manner.