Intrusion detection systems serve as the electronic sentinels of security, designed to identify unauthorized entry into a building or area. They feature an array of sensors such as contacts, and panic buttons, and a variety of detectors with their accompanying accessories. Panels, keypads, and modules like intrusion detection control panels and communicators form the control interface. Notification accessories like strobes and sirens provide audible and visual alerts of a breach. Additional accessories and batteries ensure the system remains operational in the event of power failure.