Sign warning of a radio frequency hazard on the side of a drone
Schlüsselwörter
attention,
energy,
security,
beware,
signage,
aeroplane,
equipment,
travel,
aircraft,
metal,
fly,
technology,
information,
icon,
hazard,
risk,
dangerous,
caution,
yellow,
symbol,
safety,
warning,
danger,
signs,
aviation,
plane
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