Ключевые слова: alarm, area, around, blue, cam, camera, careful, cctv, circuit, concept, control, crime, danger, digital, electrical, electronic, electronics, equipment, guard, ideas, industry, infrared, lamp, lens, looking, monitoring, observe, outdoors, pole, privacy, private, property, protect, protection, record, safe, safety, secrecy, secure, security, sky, spy, surveillance, system, technology, television, urban, video, view, watching,