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Fire Alarm
A fire alarm system warns people when smoke, fire, carbon monoxide or other fire-related emergencies are detected. These alarms may be activated automatically from smoke detectors and heat detectors or may also be activated via manual fire alarm activation devices such as manual call points or pull stations. Alarms can be either motorized bells or wall mountable sounders or horns. They can also be speaker strobes which sound an alarm, followed by a voice evacuation message which warns people inside the building not to use the elevators. Fire alarm sounders can be set to certain frequencies and different tones including low, medium, and high, depending on the country and manufacturer of the device. Most fire alarm systems in Europe sound like a siren with alternating frequencies. Fire alarm electronic devices are known as horns in the United States and Canada and can be either continuous or set to different codes. Fire alarm warning devices can also be set to different volume levels.
Wiltshire (/ˈwɪlt.ʃər, -ʃɪər/;[1] abbreviated to Wilts) is a ceremonial county in South West England. It borders Gloucestershire to the north, Oxfordshire and Berkshire to the east, Hampshire to the south-east, Dorset to the south, and Somerset to the west. The largest settlement is Swindon, and Trowbridge is the county town.
The county has an area of 1,346 sq mi (3,490 km2) and a population of 720,060. The county is mostly rural, with the centre and south-west sparsely populated. After Swindon (183,638), the largest settlements are the city of Salisbury (41,820) and the towns of Chippenham (37,548) and Trowbridge (37,169). For local government purposes the county comprises two unitary authority areas: Swindon and Wiltshire.
Undulating chalk downlands characterize much of the county; the North Wessex Downs in the east, Salisbury Plain in the centre and Cranbourne Chase in the south. The north-west is part of the Cotswolds, a limestone area. The county's major rivers are both called the Avon: the northern Avon enters the county in the north-west and flows in a southwesterly direction before leaving it near Bradford-on-Avon; the southern Avon rises on Salisbury Plain, flows through Salisbury and then into Hampshire.
Salisbury Plain is noted for the Stonehenge and Avebury stone circles, which together are a UNESCO World Heritage Site, and other ancient landmarks. Much of the plain is a training area for the British Army. The city of Salisbury is notable for its medieval cathedral. Large country houses open to the public include Longleat, where there is also a safari park, and the National Trust's Stourhead.
