FIRE ALARM EQUIPMENT AND APPARATUS-NAMELY, FIRE CONTROL PANEL, SMOKE DETECTORS, THERMAL DETECTORS, ALARM BELLS, AND CALL BOXES; SIGNAL LAMPS WHICH ARE USED AS EMERGENCY EXIT LIGHTS OR SOME TYPE OF EMERGENCY SIGNAL; FIRE EXTINGUISHING EQUIPMENT AND APPARATUS-NAMELY, CONTROL PANELS, SPRINKLER HEADS, FORM HEADS, CO2 GAS HORNS; EMERGENCY BROADCASTING EQUIPMENT; MATV (MASTER ANTENNA TELEVISION) AND CATV (COMMUNITY ANTENNA TELEVISION) EQUIPMENT AND APPARATUS-NAMELY; HEADENDS, TRUNK-AMPLIFIERS, BRIDGING-AMPLIFIERS, TAP-OFFS, SPLITTERS AND TRANSFORMERS; INDUCTION DEVICES FOR EVACUATION, WHICH ARE INTENDED TO ELECTRICALLY UNLOCK AN EMERGENCY EXIT TO ENSURE SMOOTH EVACUATION AT THE OCCURRENCE OF A FIRE-THE DEVICE MAY BE INSTALLED AT AN EXIT TO AN EVACUATION STAIR WAY OR AN EMERGENCY EXIT LEADING TO THE OUTSIDE, AND IS ADAPTED TO PERMIT MANUAL UNLOCKING OPERATION ON THE SPOT IN CASE OF EMERGENCY; ELECTRIC BATTERIES; SMOKE DISCHARGING AND AUTOMATIC FIRE DOORS (HAVING EMERGENCY LOCKING OR UNLOCKING KEVICES) CONTROL SYSTEMS AND CONTROL PANELS, SMOKE DISCHARGING DAMPERS, FIRE DOORS, EMERGENCY DOORS AND ELECTROMAGNETIC RELEASES