Abstract: A pendent assembly is disclosed for suspending from a hospital room ceiling to provide various services used in a hospital operating room. The pendent has a distribution head with outlets for such services, including, for example, electrical, gas and vacuum outlets and which is moveable upwardly and downwardly through a motive means operated by personnel using the pendant. An automatic stop mechanism is included and which comprises one or more sets of electrical contacts interposed between upper and lower housings in the distribution head. The lower housing is suspended from the upper housing at a predetermined distance therefrom and is moveable over that predetermined distance with respect to the upper housing. When the distribution head is lowered such that it encounters an obstruction, the lower head is forced upwardly and the contacts between the housings contact each other to complete an electrical circuit.