The invention relates to a hand-rail that can be used for escalators, moving pavements. The apparatus includes a clip, a first cover plate coupled to a first side of the clip, a second cover plate coupled to a second side of the clip opposite to the first side of the clip, a first frame thermally coupled to the first cover plate, and a second frame thermally coupled to the second cover plate. The indicating agent is applied to a substrate which is then inserted into a tube or straw, which can be attached to the inlet of a breath collection balloon. A speaker is mounted to a rear surface of the mounting panel on a portion where the speaker holes are formed.