Exit Stopper Door Alarm momentary reset continues to help solve the problems of unauthorized exits and entries of fire or emergency doors. The multifunction door alarm remains "on" or armed at all times and emits an audible alarm—helping to further attract attention and deter wrongful use of a protected door. The highly effective alarm is easy to install and the stop sign shape is another way it helps deter misuse. When activated, it sounds a warning alarm. A key operated override will silence the alarm and allow authorized exits. In the optional annunciator mode, the alarm will beep several times and reset when the door is closed. The self-contained alarm includes symbols and 21 labels to warn in a second language. Alarm sounds when turning on or off, includes a low battery warning, extended battery life mode (battery included), and a dry contact Form C relay option. For indoor use only.