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Intelligent Initiating r xf ES T { Life Safety & Communications R i t i '� Intelligent Photoelectric � o ��, � �Smoke Detector � SIGH -PS $ "/// CE APOlication Notes c wt b ,, Available e Overview receiving circuit. The Signature Series Model SIGA -PS Intelligent Photoelectric Fast Stable Communication - On -board intelligence means less Smoke Detector gathers analog information from its smoke sens- information needs to be sent between the detector and the loop ing element and converts it into digital signals. The detector's controller. Other than regular supervisory polling response, the on -board microprocessor measures and analyzes these signals. It detector only needs to communicate with the loop controller when compares the information to historical readings and time patterns it has something new to report. to make an alarm decision. Digital filters remove signal patterns that are not typical of fires. Unwanted alarms are virtually elimi- nated. Standard Features The microprocessor in each detector provides four additional ben- efits - Self- diagnostics and History Log, Automatic Device Map- Integral microprocessor ping, Stand -alone Operation and Fast, Stable Communication. • Non - volatile memory Self- diagnostics and History Log - Each Signature Series • Automatic mapping device detector constantly runs self- checks to provide important mainte- . Electronic addressing nance information. The results of the self -check are automatically updated and permanently stored in the detector's non - volatile • Environmental compensation memory • Intelligent detector Automatic Device Mapping - The loop controller learns where • Wide 0.67% to 3.77 % /ft. sensitivity range each device's serial number address is installed relative to other devices on the circuit. The mapping feature provides supervision • Twenty pre -alarm sensitivity values, set in 5% increments of each device's installed location to prevent a detector from being • Identification of dirty or defective detectors reinstalled (after cleaning etc.) in a different location from where it was originally. • Automatic day /night sensitivity adjustment • Stand -alone Operation - A decentralized alarm decision by the Twin RED /GREEN status LEDs detector is guaranteed. On -board intelligence permits the detector • Standard, relay, fault isolator, and audible mounting bases to operate in stand -alone mode. If loop controller CPU communi- • Designed and manufactured to ISO 9001 standards cations fail for more than four seconds, all devices on that circuit go into stand -alone mode. The circuit acts like a conventional alarm Page 1 of 4 85001-0269 Issue 6