Dortronics Systems, Inc.

The 7281-EA door alarm can be configured to provide an audible alert, at the door, if it is not closed within a specified time. If the door is held open past the allowed time, the piezo alert is sounded until the door is closed or the alarm is reset.

Features:

• Exit Alarm on Door Opening: The 7281-EA can also be configured to provide an immediate alarm on door opening. The alarm can be timed to automatically silence or “latched” on until manually reset.
• Adjustable Timed Delay: The "door open" time, for the door prop operation and the “automatic reset” time period, for the exit alarm, is field adjustable. This time delay can be set from 2 to 60 seconds.
• Automatic or Manual Alarm Reset: The alarm sounder can be configured to reset automatically or require a manual reset by key to be silenced. When used as a door prop the alarm is automatically reset on door close. If used as an exit alarm the automatic reset can be by door closure after a time delay. Either operation may utilize a manual reset by key switch, digital keypad, or other momentary switch.
• LED Indicator: A tri-state LED is provided for visual status of the door alarm. When the door is secure the LED is green, amber during door unlock/shunt, flashing amber when door is open (authorized), flashing red during the warning period, and the LED is steady red while in alarm.
• Compact Mounting Styles: The Dortronics EA door alarm modules are supplied on a single gang plate for prop alarm with sounder and LED. If the optional mushroom pushbutton or key switch is used a double gang plate is required.
• Optional R-E-X Button: A push button can be supplied on a double gang plate to provide a request-to-exit signal to the card access system. This momentary dry contact output is totally independent of the alarm electronics.
• Optional Key Reset/Shunt Switch: An optional key switch is offered to allow a manual reset by key. This key switch can also be used to provide an alarm shunt function.
• Versatile exit alarm sounder
• 12 or 24 VDC operation
• Built-in LED indicator
• Optional key reset operation

Model:

• 7281-EA: Door alarm module on 1-gang stainless steel wall plate with LED and sounder
• 7281-EA-K332: Door alarm module on 1-gang stainless steel plate with LED and sounder. Includes electrical key switch with DPDT contacts (1-maintaned contact for reset input). Key removable in both positions.
• 7281-EA-K24: Door alarm module on 2-gang stainless steel plate with LED and sounder. Includes mortised key switch assembly with dual DPDT switches (1-momentary for reset & 1-maintained for shunt). One set of contacts from each switch may be used to signal an independent system.
• 7281-EA-K24xK: Same as 7281-EA-24 above supplied with 1-1/8” mortise cylinder.
• 7281-EA-MP23: Door alarm module on 2-gang stainless steel plate with LED and sounder. Includes 1-9/16” dia. momentary res push button (1-N.O. & 1-N.C. contacts).

Specifications:

• Power: .05 Amps @ 12 or 24 VDC
• Trigger: Normally open and normally closed inputs switched to power source ground to activate relay.
• Time Delay: Timing cycle begins on clo sure of normally closed trigger or opening of normally open trigger. Time period adjustable from 2 to 60 seconds
• LED Indicator: Bi-color LED follows state of timer relay (red = relay off/green = relay on)
• Relay: DPDT - rated @ 3 amps