Abstract: A safety/warning device having a body adapted to releasably receive therein at least one source of electrical energy, the body having an open upper end in which is received a grommet, the grommet having first engaging means for engaging with second engaging means of the body to ensure correct location of the grommet relative to the body; the grommet having internal engagement means for receiving therein a light source to ensure the light source is accurately located relative to a lens which sealingly engages over and closes the open upper end; wherein the light source is at least one light emitting diode mounted on a circuit board.