Johnson Controls intelligent plug-in smoke detectors with communication provide features that surpass conventional detectors. Detector sensitivity can be programmed in the control panel software. Sensitivity is continuously monitored and reported to the panel. Point ID capability allows each detector�s address to be set with decade address switches, providing exact detector locations for selective maintenance when chamber contamination reaches an unacceptable level. The 2951J photoelectric detector�s unique optical sensing chamber is engineered to sense smoke produced by a wide range of combustion sources. Dual electronic thermistors add 135�F (57�C) fixed-temperature thermal sensing on the 2951TJ. The 2951J and 2951TJ are compatible with the IFC-200, IFC-400, IFC-640, IFC-1010, IFC-2020, and IFC-3030 Fire Alarm Control Panels (FACPs).