A connecting element for connecting two items of installation equipment to each other, the two items of installation equipment each having a housing formed of two shell-shaped housing parts having protrusions extending out from the housing parts, the housing having an end side and the end side of each housing being lined up beside each other and against each other, the connecting element comprising:
- a substantially cylindrical shaped base body having an outer diameter;
- and
- two radially springy spreading arms integrally molded to said base body and projecting axially in opposite directions from said base body, said two spreading arms have an outside diameter being smaller than said outside diameter of said base body and free ends with radially protruding lugs forming said free ends, said lugs latching in behind the protrusions formed on the housing of each of the two items of installation equipment located beside each other for connecting the two items of installation equipment to each other.