Security systems refer to the security hardware installed on a property to ensure safety against theft and property damage in an establishment. It includes doors, locks, alarm systems, motion sensors, security systems, and other additional hardware that can be fixed. Security systems can be implemented in homes as well as commercial establishments and military properties. Some alarms have a single purpose or protection, while combination systems serve multiple functions. The basic components of a security system include a sensor to detect intruders, an alerting device to indicate the intrusion, and a communication line to share the information. Security alarms are often paired with a monitoring service that is increasingly readily available as an app on mobile phones and tablets.