Abstract: An electric low-voltage connecting terminal (1) is provided, in particular for luminous signallers, which comprises a socket connector (2) having a tubular coupling portion (2a), a plug connector (3) having a reed-like coupling portion (3a) to be fitted into the tubular coupling portion (2a) for establishing an electrical contact over an area substantially equal to the surface of the opposite side edges (3b) of the reed (3), and snap-engagement elements (9a) adapted to prevent slipping off between said socket (2) and plug (3) connectors.

Abstract: A device exerting a protective action against fluid seepages in electrical switches and the like comprises an annular seal (9a, 9b, 9c, 9d) perimetrically integral with an external box-shaped body (5) of a switch and operating on a border (4a) of a shaped opening (3) formed on the front in a support wall (4) into which the switch is to be engaged. The device further comprises sealing means between the operating push button (8) and a guide collar (15) for said push button provided in a switch.

Abstract: A pressure switch for detecting and controlling small pressure gradients in fluid circulation systems includes a containing body having first and second channels formed therein, and an elastically deformable diaphragm. The diaphragm is supported at its edges by the body and separates the first and second channels from each other. A small disc formed of an electrically conductive material cooperatingly engages a portion of one of the faces of the diaphragm. Electrical contacts are supported by the body and disposed adjacent the small disc. The diaphragm is provided with a working portion that is disposed outwardly from the periphery of the small disc and is relatively thin. The pressure switch further includes an annular supporting plug projecting from the containing body and engaging the diaphragm close to the edge of the disc.