A security alarm is a system designed to detect intrusions, such as unauthorized entry, into a building or other areas, such as a home or school. Security alarms protect against burglary (theft) or property damage, as well as against intruders. Examples include personal systems, neighborhood security alerts, car alarms, and prison alarms.
Some alarm systems serve a single purpose of burglary protection; combination systems provide fire and intrusion protection. Intrusion-alarm systems are combined with closed-circuit television surveillance (CCTV) systems to record intruders' activities and interface to access control systems for electrically locked doors. There are many types of security systems. Homeowners typically have small, self-contained noisemakers. These devices can also be complicated, multirole systems with computer monitoring and control. It may even include a two-way voice which allows communication between the panel and monitoring station.
Grimsby, also Great Grimsby, is a large coastal English seaport and administrative centre in North East Lincolnshire, on the South Bank of the Humber Estuary, close to where it reaches the North Sea. It was the home port for the world's largest fishing fleet by the mid-20th century, but fishing fell sharply after the Cod Wars denied the United Kingdom access to Icelandic fishing grounds, and the European Union parcelled out fishing quotas in waters within a 200-nautical-mile (370 km) limit of the UK coast to other European countries, in line with its Common Fisheries Policy. Grimsby has since suffered post-industrial decline, although food production has spread since the 1990s. The Grimsby–Cleethorpes conurbation acts as a cultural and economic centre for much of north and east Lincolnshire. Grimsby people are called Grimbarians; the term codhead is also used jokingly, often for Grimsby football supporters. Great Grimsby Day is 22 January.