Siemens FDS364 R Sounder

The Siemens FDS364 R Sounder is an addressable acoustic sounder housed in a durable red enclosure, engineered to deliver powerful emergency evacuation warnings across commercial life safety installations. Manufactured by Siemens for direct connection to Cerberus PRO and Desigo fire alarm control panels on FDnet and C-NET loops, it draws both operating power and digital communications straight from the two-wire line without requiring auxiliary power supplies or additional cabling. The device produces high-decibel acoustic output featuring multiple panel-configurable alarm tones and volume levels to effectively penetrate ambient background noise and ensure immediate occupant alerting. Built with an integrated short-circuit isolator to protect loop functionality during wiring faults, low current consumption to optimize device capacity per loop, and a rugged flame-retardant red plastic housing designed for wall surface mounting, it offers long-term dependable acoustic notification for commercial offices, healthcare facilities, hospitality spaces, and industrial environments.