ELECTRIC SIRENS, LOUD SPEAKERS, PUBLIC ADDRESS SYSTEMS, AMPLIFIERS, POWER SUPPLIES FOR LIGHTS, SIRENS AND PUBLIC ADDRESS SYSTEMS, CONDITION RESPONSIVE ALARMS, APPARATUS FOR TESTING THE STATE OF OPERABILITY OF ELECTRONIC SIRENS AND PUBLIC ADDRESS SYSTEMS, AND SPARE AND REPLACEMENT PARTS FOR ALL OF THE AFORESAID GOODS. ELECTRIC WARNING LIGHTS AND ELECTRIC WARNING LIGHT SYSTEMS COMPRISING LIGHTS AND POWER SUPPLIES THEREFOR, FLOOD LIGHTS, SPOTLIGHTS AND SPARE AND REPLACEMENT PARTS FOR ALL OF THE ...