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.
Cromer (/ˈkroʊmər/ KROH-mər) is a coastal town and civil parish on the north coast of the English county of Norfolk. It is approximately 23 miles (37 km) north of the county town of Norwich, 116 miles (187 km) north-northeast of London and 4 miles (6.4 km) east of Sheringham on the North Sea coastline. The local government authorities are North Norfolk District Council, whose headquarters is on Holt Road in the town, and Norfolk County Council, based in Norwich. The civil parish has an area of 4.66 km2 (1.80 sq mi) and at the 2011 census had a population of 7,683.
The town is notable as a traditional tourist resort and for the Cromer crab, which forms the major source of income for local fishermen. The motto Gem of the Norfolk Coast is highlighted on the town's road signs.