Electronic devices for locating and tracking lost articles, people using cellular communication networks; Environmental monitoring system comprised of meters and sensors that measure pressure, humidity, temperature and includes alarm and reporting functions; Fire fighting equipment, namely, fire fighting monitors that spray foam or liquids on fires; Portable telecommunication instant messaging devices; Safety sensors, namely, carbon monoxide detectors, smoke detectors, and combination carbon monoxide and smoke detectors; Security alarm controllers; Sprinkler systems for fire protection; Stand-off explosives and chemical detection system comprising strobe and probe lasers, optical detectors and digital signal process units; Videocameras; Wearable computers in the nature of smartwatches