Siemens (XTRI-R) Intelligent Interface Module - Model: S54370-B1-A1 Siemens (XTRI-R) Intelligent Interface Module - Model: S54370-B1-A1 The Siemens XTRI-R (S54370-B1-A1) Intelligent Interface Module enables seamless integration of direct shorting devices to fire alarm control panels (FACPs). Featuring dual isolation technology, it supports up to 252 isolators per loop and complies with NFPA 72 Class X (Style 7) wiring standards. The module offers configurable modes (isolator or non-isolator) and includes Form C relay control for external equipment. With advanced diagnostics and troubleshooting capabilities, the XTRI-R improves system efficiency and minimizes downtime. It also includes a multi-color LED indicator and mounts in a 4-inch square back box. About Us Welcome to Help! Resale, your go-to consignment shop where value meets quality. At Help! Resale, we're dedicated to providing you with an exceptional shopping experience, whether you're looking to find the best deals or consign your gently used items. Help Resale 7200 Fair Oaks Blvd Ste 120 Carmichael CA 95608 Business Hours: Monday-Friday: 9:00 am to 5:30 pm (PST) All product and company names are trademarks TM or registered trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them. (description exceeds maximum possible length)