XTRI-M SIEMENS Replacement Htri-MThe Siemens Fire Safety Intelligent Interface Module (Model XTRI M) is designed to provide the means of interfacing direct shorting devices to the fire alarm control panel (FACP) loop circuit. The module uses one (1) address on the loop. Each XTRI series interface module provides the built in ISOtechnology feature intelligent dual isolation meeting NFPA 72 Class X (Style 7) wiring requirements. Up to 252 isolation ready devices per loop and in mixed