Siemens XTRI-D Dual Input ModuleThe Siemens XTRI D is an intelligent dual input interface module for monitoring two sets of normally open or normally closed dry contacts on the SLC. It includes ISOtechnology dual isolation for NFPA 72 Class X (Style 7) survivability, a tri color status LED, and configurable wiring: isolator mode or polarity insensitive wiring in non isolator mode using SureWire. The device occupies one loop address but responds independently to each input. Also