9 FIRE ALARMS; FIRE AND SMOKE PROTECTION AND ALARM SYSTEMS; FIRE AND SMOKE DETECTORS, GAS DETECTORS AND GAS MONITORING SYSTEMS, EVACUATION CONTROL SYSTEMS, PORTABLE AND MOBILE FIRE EXTINGUISHING SYSTEMS AND EQUIPMENT, STRUCTURALLY MOUNTED FIRE EXTINGUISHING SYSTEMS TO MANUALLY OR AUTOMATICALLY DISPENSE A FIRE EXTINGUISHING AGENT UNDER PRESSURE, FIRE EXTINGUISHING SYSTEMS WITH AGENTS NOT UNDER PRESSURE, AND PARTS AND COMPONENTS THEREFOR