Federal Signal’s Model 2 siren is the most commonly used siren for fire station and industrial plant alerting. The siren is an outdoor warning siren providing omni-directional coverage capable of producing intense warning signals over a large area. The siren is typically installed on a roof or on a standard utility pole.

The Model 2 is a mechanical single tone siren capable of producing 102 dBc @ 100’ while making only moderate power source demands. The Model 2 has a high powered AC motor which operates from either 120VAC/DC or 240VAC/DC.  A Federal Signal Model RC2W-120 or -240  motor starter (purchased separately) is required to operate this siren. The Federal Signal motor starter is recommended due to the ability to handle the specific requirements of the Model 2 siren.

The Model 2 siren and motor starter can be used with the FC controller for further control of the Model 2 siren. The FC provides relay contact closures to activate the RC2W-XXX motor starter. The FC controller can be programmed to activate the sire for a per-determined interval, cane be activate thru radio control or through remote pushbuttons.

Federal Signal’s Model 2 can serve as an outdoor plant-wide warning system where volume is needed to contrast with high ambient industrial sounds. It is ideal for use in the large, wide open areas found in industrial facilities such as refineries, steel mills and manufacturing plants. The Model 2 can be used for start/stop work signaling, plant evacuation or other emergency situations.


Voltage 120VAC/VDC
AC Voltage Frequency 25-60Hz single-phase AC
Decibel Output 102dBc at 100 Feet
Output Frequency 533Hz @ 60Hz / 444Hz @ 50Hz
Beam Width 360º
Mount Roof (standard)
Pole (model PMS required)
Recommended Mounting Height 35.000 in
Tones 1 Standard
Effective Range @ 70dBc 1,000 ft
Power Rating 2 HP
Power Requirements 120VAC/VDC (24A, single phase)
240VAC/VDC (12A, single phase)
Height 25.5 in / 65 cm
Diameter 18 in / 46 cm
Net Weight 56 lb / 27 kg
Shipping Weight 85 lb / 36 kg


Ordering Information

Model Types
Model Description UPC
2-120 Siren, 120VAC 78297925510
2-240 Siren, 240VAC 78297925520
Replacement Parts
Description Part Number
HOLDER,BRUSH VDR # 840-0 Q8247A021