Departure Alert Door strip mounts easily to any crucial doorway or exit to alert you when any resident wearing a wristband (not included) attempts to depart. Simply hang the Departure Alert above the door and plug it in&mdash,no set-up required! When the resident wanders too close, an audible and visual alert sounds. Only the caregiver can silence the alarm using the caregiver key or order optional Wireless Keypad. Optional Central Monitoring Unit sounds alarm at nurse&rsquo,s station by displaying both the doorway location and the resident that set off the alarm. One-year warranty.