Product description: All SmartOne devices offer rapid alarm response and Fail-Soft operation. Fail-Soft operation combats unlikely communication link failure between the Control Unit and the individual detector; if a failure were to occur, the detector would operate as a standard alarm point on a conventional type zone circuit.   Detectors and Accessories include:  Ionization, Photoelectric and Thermal Detectors Contact Input Device Relay Output Device Signal Module Detector Base with Signal Module AlarmLine Linear Heat Detector Air Duct Smoke Detector  |