It is unknown how long the coded Model 2 was produced for. When ever the bottom gear oscillates back and forth, the shaft would rotate and cause the stator to open and close making a "coded" signal. Located at the top of the shaft was a small gear and a strip of gear teeth connected to the stator. A small motor located at the base of the siren would oscillate a gear which would move a metal shaft leading to the stator. Federal had also made a coded version of the Model 2. Although these differences are quite noticeable, the basic formula for the Model 2 has remained constant since the first ones were built around 1907. The 4 brush setup and long legs were replaced with a short leg, two brush setup around 1953, with the version still currently produced today. The long leg sirens also used 4 brushes as opposed to 2. The long leg sirens were predominately single tone, yet some dual tones have shown up, such as the example in New Orleans, LA that is pictured. It is also worth noting the Long Legs lacked the intake cone and stator ring for stabilizing the housing that newer sirens feature. They were called this because the mounting legs that bolted to the motor were rather tall, at roughly 9 or 10 inches tall. The first 2s were referred to as the "Long Legs". The newer and current design has 1 louver on top and 2 on the bottom. The Model 2 was first introduced in 1907 making it the longest running siren in production and it's still being produced today! The first design of the Model 2 featured 3 louvers, 2 on top and 1 on the bottom. Protective mesh screens are mounted on the siren's three openings to keep out birds and debris. It features a 100% sheet metal enclosure with polyester powder-coated paint. It can be operated automatically or remotely with an indoor/outdoor Federal RC2W controller. It is available in two power choices: Model 2-120, running on single-phase 120/125 VAC, or Model 2-240, running on single-phase 240/250 VAC. It can be roof-mounted or pole-mounted, at a recommended 35–40 feet. The Model 2 is 25.5 inches tall by 12 inches wide, and weighs 68 lbs. The Model 2 features a 2 HP universal motor powering a single-tone 5-port chopper motor, which was also used on the Thunderbolt 1000, another siren once made by Federal Signal. The Federal Signal Model 2 is an omnidirectional outdoor warning siren produced by Federal Signal Corporation. ( Learn how and when to remove this template message) JSTOR ( September 2015) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.įind sources: "Federal Signal Model 2" – news
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