521LX/521LXT
The Model 521LX and 521LXT Smoke Detectors are the industry's finest smoke detectors, with analog features such as
remote maintenance reporting (CleanMeT), drift compensation, and multi-criteria detection. These smoke detectors
incorporate an addressable single point module for connection to the LX-BusT of an XR200 Command ProcessorT Panel with
firmware version 1.04 (6/11/98) or higher. The 521LXT also includes multi-criteria fast response heat sensor algorithms for
detection of a broad range of fires.