Siemens FDCI723 Zone Module External Powered

The Siemens FDCI723 is an externally powered addressable zone module designed to connect conventional fire detector lines to an FDnet/C-NET communication loop. Functioning as a high-capacity interface, this module requires an external 24 VDC power supply to drive connected conventional fire detectors, manual call points, and intrinsically safe barriers. It continuously supervises the conventional collective zone line for open-circuit and short-circuit faults, transmitting status updates directly to the main fire control panel. Built with an integral line separator to maintain uninterrupted loop communication during wiring faults, automatic soft-addressing capabilities, and onboard LED indicators for quick visual diagnostics, the FDCI723 offers a reliable solution for integrating legacy conventional detection zones into modern addressable fire safety networks.