Solve the problems of unauthorized exits and entries of fire or emergency doors. Multifunction door alarm flashes while it emits an audible alarm, helping to further attract attention, and deter wrongful use of a protected door. User selects (on location) the ear piercing alarm volume and length (30 Seconds, 3 Minutes, or Continuous). A key operated override will silence the alarm and allow authorized exits. Sounder also offers an annunciator mode. In this mode, the alarm will beep several times, and reset once the door has been closed.