Connect windows, walls, ceilings, cabinets or safes to your hardwired alarm system. The Vibration Detector can be used with any security system with normally closed circuits, triggering an alarm when the device or point of entry it's monitoring is shaken. Security wiring is sold separately to connect the tamper switch to your alarm system. A silver-plated contact ensures reliability and long-term operation. A built-in tamper switch is independent in circuit from the vibration detector, so the switch can trigger the alarm panel if the cover is removed. Vibration contacts are adjustable for different surfaces. Install with two-sided adhesive tape (sold separately).