The Federal Signal Model FSF206 Synchronization Module is designed to provide simultaneous operation of select fire alarm strobes and sounders (FSF104, FSF105, FSF200ST, FSF201ST, FSF204ST, and FSF205ST) when initiated by a Fire Alarm Control Panel. Strobe light flashes and temporal pattern of certain horns can be synchronized, along with the ability to silence the horn while maintaining the strobe flashes.

The FSF206 has the capability of connecting two Class B circuits or one Class A circuit and is rated for 3 Amps per circuit.

The FSF206 can be interconnected so that more than 2 alarm zones can be synchronized. The maximum number of interconnected modules is twenty. All inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a Fire Alarm Control Panel.