Safety Technology International Inc.
Exit Stopper
STI’s multifunction door alarm helps prevent unauthorized exits and entries of fire/emergency doors. Exit Stopper alerts if a protected door is opened by emitting a 95/105dB alarm for 30 seconds, three minutes or continuously. Annunciation mode announces door entry with a set of 10 beeps and resets. The credential can be securely embedded on NFC smartphones for physical access control, PC logon, biometrics and a wide range of additional applications. The alarm can serve as an inexpensive security device and help stop theft. It is available in supervised wireless.
http://www.sti-usa.com/category/alarmschimes/dooralarms/index.htm