The Litestak® LSH horn is a piezoelectric unit that employs a ceramic element which expands or bends when voltage is applied, generating a single tone. The model LSH can be used as a stand-alone audible device (with the LSB pipe/ surface mount base or LSBS surface mount base) or combined with the Federal signal Litestak® light modules to create a combination audible/visual signal. The LSH horn is a modular unit which mounts directly onto the top of any Litestak® light or base (sound units must be positioned at the top module of the status indicator). A black speaker grille cover protects the horn. The volume can be adjusted by removing the grille covers and adjusting the volume control below the horn mechanism. All Litestak® models should be mounted base down.