Federal Signal Models FSF104 Selectable Horn and FSF105 Selectable Chime are designed to provide local audible indication indoors when activated by a Fire Alarm Control Panel. Each model can be synchronized to work simultaneously with other units and each complies with NFPA requirements and UL categoires 464 and 1971 for private mode fire applications.

The model FSF104 Selectable Horn provides two different field selectable tones and a high/low output setting that can be accomplished with the use of mini jumpers located on the back of the unit. The FSF104 is clearly labeled with FIRE lettering and is polarized for connecting to supervised fire alarm circuits. The FSF is availabe in 24VDC only; however, the horn will operate with a regulated DC supply or a FWR (full wave rectified) power source. The FSF104 is listed for indoor use, utilizing the same configuration for both ceiling and wall mount, under the UL1971 standard.

The model FSF105 Selectable Chime provides a continuous tone or temporal pattern tone when constant voltage from a Fire Alarm Control Panel is applied. Each tone has two dBA levels (high or low) to choose from by repositioning a jumper located on the back of the unit. The FSF105 can be connected either independently or in unison. Using the FSF206 Synchronization module, the Temporal pattern of the FSF105 can be synchronized if two or more audible appliances are desired. The model FSF105 Selectable Chime is listed for indoor use when installed in a wall or ceiling mount configuration.