Outdoor public address speakers on pole against blue sky with clouds
Schlüsselwörter
loudspeaker,
speaker,
megaphone,
pole,
broadcast,
announcement,
communication,
audio,
sound,
system,
public,
address,
emergency,
alert,
warning,
notification,
sky,
cloud,
blue,
white,
minimal,
clean,
technology,
equipment,
signal,
message,
service,
security
Deutsch
