FERCO

electrical, electronic, and magnetic card apparatus or instruments for detection of theft, fire, break-ins and smoke relating to doors, windows and locks; signal and alarm units for break-ins, fire and smoke regarding closing and opening of doors, windows, transom windows; unit for producing aural or visual warning signals for use in computer-operated machinery; telephonic transponders; electronic locks and casement bolt locks controlled by microprocessors; control centers and units for opening and closing of openings, namely windows, doors and the like, in conjunction with detection units

ventilators, aerators, and dehumidifiers for use in systems for climatization and regeneration of air in enclosed spaces