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.
Farnham is a market town in Surrey, England, within the borough of Waverley. The town is 36 miles (58 km) southwest of London in the extreme west of Surrey, adjacent to the border with Hampshire. By road, Guildford is 11 miles (17 km) to the east and Winchester a further 28 miles (45 km) along the same axis as London. Farnham is the largest town in Waverley; it is one of the five largest conurbations in Surrey. It is of historic interest, with many old buildings, including a number of Georgian houses. Farnham Castle overlooks the town. A short distance south-east of the town centre are the ruins of Waverley Abbey, Moor Park House, Northbrook Park and Mother Ludlam's Cave. Farnham is twinned with Andernach in Germany. It is drained by the River Wey (North Branch) which is navigable only by canoe at this point.