TRI-B6M | Siemens Intelligent Interface Module for Fire and Security Contact SupervisionDescription The Siemens TRI B6M Intelligent Interface Module provides reliable monitoring and control of external devices with normally open (N. O.) or normally closed (N. C.) contacts. It enables seamless integration between fire or security detection circuits and Siemens intelligent control panels through advanced two wire communication. Technical Specifications Condition New Never Used Surplus Brand Siemens Category Fire Alarm Components Part