Carbon dioxide detectors; Dust measuring apparatus; Passive infrared detectors; Metal detectors; Wind pressure gauges; Wind sleeves; Windsocks for indicating wind direction; Fire extinguishing apparatus for automobiles; Fire hoses; Fire hose nozzles; Fire pumps; Fire-fighting equipment, namely, water cannons; Fire boats; Fire engines; Fire blankets; Fire extinguishers; Sprinkler systems for fire protection; Fire extinguishing apparatus; Acoustic sound alarms; Alarm sensors; Alarms for the det...