WA siren is a loud noise-making device. Civil defense sirens are mounted in fixed locations and used to warn of natural disasters or attacks. Sirens are used on emergency service vehicles such as ambulances, police cars, and fire trucks. There are two general types: pneumatic and electronic.
WThe Broadmoor Sirens are a series of thirteen warning sirens based in towns and villages surrounding Broadmoor Hospital in Crowthorne, Berkshire, England. They were first installed in 1952 and are based on air raid sirens with the intention of warning residents living near the high-security psychiatric hospital of an escaped patient.
WThe Chrysler Air Raid Siren, or known as the Chrysler Bell Victory Siren is an outdoor warning siren produced during the Cold War era that has an output of 138 dB(C) at 100 feet (30 m).
WA civil defense siren is a siren used to provide an emergency population warning to the general population of approaching danger. It is sometimes sounded again to indicate the danger has passed. Some sirens are also used to call the volunteer fire department when needed. Initially designed to warn city dwellers of air raids in World War II, they were later used to warn of nuclear attack and natural destructive weather patterns such as tornadoes. The generalized nature of sirens led to many of them being replaced with more specific warnings, such as the broadcast-based Emergency Alert System and the Cell Broadcast-based Wireless Emergency Alerts and EU-Alert mobile technologies.
WThe Federal Signal 3T22 / 2T22 was an outdoor warning siren made by Federal Signal Corporation from 1952 through the early 1990s. It has a very recognizable design, having a ten-port rotor (chopper) on the bottom with ten cones (horns) and a 12-port one on top with twelve cones.
WFederal Signal Modulators are electronic warning devices produced by Federal Signal Corporation that are used to alert the public about tornadoes, severe weather, earthquakes, fires, lahars or any other disaster. They are identified mostly by their distinctive stacked "flying saucer" design. The Modulator II is sold based on the more compact chassis of the siren compared to the original Modulators.
WThe Public Warning System is a network of civil defense sirens installed by the Singapore Civil Defence Force on over 2,000 strategic points in Singapore to warn Singaporeans of impending dangers, air raids and atomic bomb blasts. Thus far, the siren network has only been used for occasional public awareness drills, monthly noon chimes and for commemorating the island's Total Defence and Civil Defence Days. It was also used to mark a minute's silence nationwide for the passing of former Prime minister Lee Kuan Yew on the evening of 23 March 2015 and on 1 and 9 August 2020 to mark the first National Day at home.
WThe Q2B siren ("Q-siren") is an electromechanical siren that is produced by the Federal Signal Corporation and is most recognizable for its sound, which is trademarked, and the look of the siren.
WA Rumbler siren is a type of emergency vehicle siren used primarily in the United States. Developed in 2007 by Federal Signal Corporation, and sounding at a low-frequency level, it is designed to be heard by motorists who may otherwise be unable to hear high-frequency sirens due to ambient noise, such as urban traffic.
WThe Severnside Sirens are a system of Civil defense sirens located along the South Severn Estuary coastline from Redcliffe Bay to Pilning, northwest of Bristol. They are activated by Avon and Somerset Police in the event of a potential incident at one of the COMAH sites located in the area, mainly in and near Avonmouth. The system was setup in 1997 following a fire at the Albright and Wilson site in 1996.
WSiraTone is a brand of electronic outdoor warning sirens produced by Federal Signal Corporation which began production in 1981. These sirens were designed to broadcast high-intensity warning signals over a large area. SiraTone products are/were used for natural disaster notification, HAZMAT incident notification, fire call systems, and more. Most of the SiraTone line was discontinued in the mid-to-late 1990s and newer designs, like the Modulator and DSA, have replaced it. The SiraTone product line is not in standard production, as of 1995. An exception to the rule, the EOWS* 612 speaker array was sold on request until the mid-2000s.
WThe stator is the stationary part of a rotary system, found in electric generators, electric motors, sirens, mud motors or biological rotors. Energy flows through a stator to or from the rotating component of the system. In an electric motor, the stator provides a rotating magnetic field that drives the rotating armature; in a generator, the stator converts the rotating magnetic field to electric current. In fluid powered devices, the stator guides the flow of fluid to or from the rotating part of the system.