9 electronic systems, namely, microprocessor based fire detection and control instrument panel for fire monitoring purposes including surveillance of door switches and door control devices; fire display instrument control panels; remote display control panels; fire sensors, namely, smoke detectors, heat detectors, flame detectors, early warning smoke detection system comprising highly sensitive smoke detectors coupled with an air sampling apparatus; fireman's telephones; fire extinguishers; solenoid valves; solenoid actuators; automatic valves; automatic control valves; water pressure regulators; water pressure gauges; water level guages; microprocessor controller of fire extinguishing releasing materials, namely, water, carbon dioxide, halon and similar gases which can extinguish fires