Megaphone for signaling in case of fire on the wall of a warehouse building.
Schlüsselwörter
siren,
signal,
loudspeaker,
fire,
megaphone,
emergency,
alarm,
danger,
communication,
announcement,
closeup,
background,
technology,
speaker,
sound,
urgent,
open,
warning,
protection,
work,
equipment,
evacuation,
disaster,
white,
wall,
warehouse,
industry
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