Abstract: An electric control or signaling device to be assembled through an opening formed in a wall, and including a tubular metal body which is to engage with a first surface of the wall, wherein the body includes a threaded cylindrical portion to be inserted into the opening and an attachment device including a metal clamping ring to be screwed onto the threaded cylindrical portion of the body to attach the control or signaling device through the opening, and a metal attachment plate to be applied against a second surface of the wall opposite the first surface by the clamping ring.

Abstract: An electric control or signaling device to be assembled through an opening formed in a wall, and including a tubular metal body which is to engage with a first surface of the wall, wherein the body includes a threaded cylindrical portion to be inserted into the opening and an attachment device including a metal clamping ring to be screwed onto the threaded cylindrical portion of the body to attach the control or signaling device through the opening, and a metal attachment plate to be applied against a second surface of the wall opposite the first surface by the clamping ring.

Abstract: The present invention relates to an electrical control or signaling apparatus such as a push-button or indicator lamp consisting of a tubular body (12) which can be inserted into an aperture in a surface (13) and capable of fitting, using locking means (24), to a base (2) designed to receive at least one electrical unit (4) and comprising fastening means (3) acting on the inner side of the surface and characterized by the fact that the base (2) fits onto the tubular body (12) to which it is fastened by a sliding lock (24) and fastening means (3) consisting of a pivoting yoke (3) provided with two anchoring forks (33,34) mounted on hinges (35-221) to the base so that their free ends lie on either side of the movable section (25) of the lock (24), said yoke bearing a tightening screw (31).