The S100D-WA-24-A, manufactured by QLIGHT, is a signaling device with a lighting-sound combination, 24VDC, siren, rotating light and IP54-level waterproofing. It provides an effective emergency warning system, with visual and audible alerts. The siren produces a loud, clear tone and the rotating light produces a bright flash for maximum visibility. The unit is rated for IP54-level waterproofing, allowing it to be used in humid or damp environments.