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.
Coalville is an industrial town in the district of North West Leicestershire, Leicestershire in the East Midlands of England, with a population at the 2011 census of 34,575. It lies on the A511 trunk road between Leicester and Burton upon Trent, close to junction 22 of the M1 motorway where the A511 meets the A50 between Ashby-de-la-Zouch and Leicester. It borders the upland area of Charnwood Forest to the east of the town.
Coalville is twinned with Romans-sur-Isère in southeastern France.