Alarm monitoring systems; Carbon dioxide detectors; Climate control digital thermostats; Downloadable computer operating software; Dust protective goggles and masks; Electric wires and cables; Electric and electronic video surveillance installations; Electrical and electronic burglar alarms; Fire extinguishers; Fireproof garments; Gas testing instruments; Infrared detectors; Rechargeable electric batteries; Sensors for determining position, velocity, acceleration and temperature; Smoke alarms...