Siemens FDS225 R Voice Sounder

The Siemens FDS225 R Voice Sounder is an addressable loop-powered voice sounder housed in a durable red enclosure, designed to broadcast clear spoken voice messages and acoustic alarm tones. Engineered by Siemens for seamless integration with Cerberus PRO and Sinteso 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 field wiring. The device features pre-stored multilingual voice messages and panel-configurable alarm tones to deliver highly intelligible spoken evacuation instructions, significantly improving occupant response times during critical life safety events. Equipped with an integrated short-circuit isolator to preserve loop operational continuity during cable faults, low quiescent power consumption to maximize loop device capacity, and a high-impact red plastic enclosure suited for wall or ceiling mounting, it provides a dependable spoken alert solution for commercial offices, hotels, healthcare facilities, and public buildings.