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Male security guard with portable transmitter monitoring modern CCTV cameras indoors
Abstract antenna mast with world map. 5G technology, telecommunication industry, telecom network, broadcast television, cell phone, 5G telecommunication, city communication, LTE transmitter concept.
Male security guard using portable radio transmitter indoors
Echo sonar waves. Sound cycle pulse circular wave, pattern radar screen system, circle concentric audio speaker geometric abstract texture music broadcast, vector illustration. Echo sonar signal

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