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An automatic fire alarm system—typically made up of smoke detectors, heat detectors, manual pull stations, audible warning devices, and a fire alarm control Central Station Fire Alarm Systems (Automatic, Manual, and Waterflow) Protected Refer to Spectronics Compatibility Chart for compatible listed devices. Spectronics Manual 640 Fire Alarm DownloadDocument about 640 Spectronics Fire Alarm Download Manual is available onprint and digital edition. Spectronics 640 Fire Alarm Manual download Document about Spectronics 640 Fire Alarm Manual Download is available on print and digital edition. Battery and Current meter Spectronics 641/VAM. Opens in a new window or tab Thermo Spectronic Educator Digital SPECTROPHOTOMETER 333142 w/ Manual.