Ключевые слова: alertness, area, attention, background, badge, banner, board, brick, bricks, brickwall, cable, cam, camera, cameras, cams, caution, cctv, circuit, closed, confidence, confidential, control, crime, danger, electronics, equipment, four graphic, green, grey, home, hour, hours, hrs, icon, industry, information, logo, message, monitored, monitoring, notice, observation, outdoors, police, post, power, prevention, privacy, private, property, protect, protected, protection, red, remote, safety, security, sign, signboard, spectator, square, sticker, surveillance, survey, symbol, system, technology, television, under, vandalism, video, view, visual, wall, warn, warning, watch, yellow, zone,