Ключевые слова: alarm, alertness, building, camera, cctv, ceiling, control, crime, detection, digital, electronic, equipment, guard, home, indoors, ip camera, lamp, look, modern, monitoring, observe, office, police, privacy, private, property, protect, protection, record, safe, safety, secrecy, secure, security, spy, supervision, surveillance, suspended ceiling, system, technology, video, watch, watching,