The Detex Door Prop Alarms were originally designed to prevent secure doors from being propped open, helping to avoid a security breach in the access control system. Detex also manufactures exit alarms, such as the EAX-500, EAX-2500 and EAX-3500 that sound when someone exits though a controlled opening, thus helping to control foot traffic. However, in some applications, staff simply wants a local alarm to alert those nearby that a door was opened. Rather than create a situation where a supervisor is forced to come to the door with a key and reset an alarm, it is possible that they simply want an alert when someone opens a particular door. In such cases, the Detex Door Prop Alarms can be used as a door annunciator, by simply changing the field adjustable timer to zero seconds. When used as a door annunciator, the alarm will sound when the door is opened and stop sounding after 4 seconds. Typical uses include, low risk emergency exit only doors, doors leading to stockroom from sales floor, stairwell doors, and various internal doors within healthcare and educational facilities. Remember the Detex Door Prop Alarms can be used for two different purposes. So when you are asked about a door prop alarm or door annunciator alarm, know that Detex manufacturers one product that will satisfy either customer.