Dortronics 7281 Series Door Ex...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$460.00
$320.00
Dortronics 7281 Series Door Exit Alarm with Adjustable (2 to 60 Second) Time Delay, Single Gang With LED

Dortronics 7281 Series Door Exit Alarm with Adjustable (2 to 60 Second) Time Delay, Single Gang With LED

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Model: 7281-EA

In Stock (leaves warehouse same day if ordered before 3pm ET)

$460.00
$320.00
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Dortronics 7281 Series Door Exit Alarm with Adjustable (2 to 60 Second) Time Delay, Single Gang With LED and Audible Alarm

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

Resouces

7281 SERIES DOOR ALARMS BROCHURE

Manufacturer Resources

Product Specs

Product Group:
Electronic Access Controls
Series:
7281 Series
Product Subgroup:
Sensors, Switches, Relays and Timers
Product Type:
Door Prop Alarms
Subcategory:
Door Prop Alarms
Commercial/Residential:
Commercial
Electronic:
Yes
Relay:
DPDT - Rated at 3 amps
Time Delay:
Time period adjustable from 2 to 60 seconds
Power:
.05 Amps 1at 2 or 24 VDC
Product Category:
Electronic Access Controls
Department:
Door Hardware

Dortronics 7281-EA – Frequently Asked Questions

1) Can the Dortronics 7281-EA be set to alarm the instant the door opens instead of only when it is propped?
Both modes are available. Configured as a door prop alarm, the piezo sounds only after the door has been held open past the allowed time and stops when the door closes. Configured as an exit alarm, it sounds immediately on door opening, and that alarm can either time out and silence itself or latch on until someone manually resets it.
2) How long can the door be held open before the Dortronics 7281 alarm sounds?
The door open window is field adjustable from 2 to 60 seconds on the unit itself, so you set it on site rather than ordering a fixed timing. The same adjustment sets the automatic reset period when the module is used as an exit alarm.
3) Will the 7281-EA fit a single gang box, or do I need to cut in a double gang?
The base 7281-EA mounts on a 1-gang stainless steel wall plate with the LED and sounder, so a single gang box is enough. Once you add the mushroom pushbutton or the mortised key switch option, a 2-gang plate is required, so plan the box before rough-in. The 7281-EA-K332 electrical key switch version stays on a 1-gang plate.
4) Can staff silence the Dortronics door alarm with a key instead of waiting for it to reset?
Yes, and there are two key options. The 7281-EA-K332 adds an electrical key switch with DPDT contacts, one maintained contact used as the reset input, and the key pulls in both positions. The 7281-EA-K24 uses a mortised key switch assembly with two DPDT switches, one momentary for reset and one maintained for shunt, on a 2-gang plate. Reset can also come from a digital keypad or any other momentary switch.
5) Can I get a request-to-exit signal out of the Dortronics 7281 for my card access system?
Yes, by ordering the pushbutton version. The 7281-EA-MP23 adds a 1-9/16 inch diameter momentary mushroom push button with one N.O. and one N.C. contact on a 2-gang plate, and that dry contact output is completely independent of the alarm electronics, so the REX signal to the access panel is unaffected by whatever the sounder is doing.
6) What is the difference between the Dortronics 7281-EA door alarm and the Detex EAX-300W?
Both are door prop alarms, but they are built for different openings. The Dortronics 7281-EA is a hardwired module on a single gang stainless steel wall plate running on .05 amps at 12 or 24 VDC, with a field adjustable 2 to 60 second delay, a tri-state LED and a DPDT relay rated at 3 amps that can signal other systems. The Detex EAX-300W is a weatherized battery powered unit with a 100 dB alert, so it mounts at the door itself without a wired power run and suits exterior or unconditioned openings. Choose the 7281-EA when you have low voltage power at the opening and want relay output and a wall plate finish that matches adjacent devices; choose the EAX-300W when there is no power to pull.
7) Can a battery powered prop alarm like the Detex EAX-300W replace the Dortronics 7281-EA where the access control panel needs a signal?
Not on a like-for-like basis. The Dortronics 7281-EA carries a DPDT relay rated at 3 amps and, with the optional push button version, a momentary dry contact request-to-exit output that is independent of the alarm electronics, so it can pass status and REX to a card access system. The Detex EAX-300W is a self-contained weatherized battery powered unit with a 100 dB local alert, sounding at the door. If the requirement is a wired signal back to the panel, stay with the 7281-EA and its wired 12 or 24 VDC supply.
8) Does the 7281-EA-K24 come with a cylinder, or do I have to key it myself?
The plain 7281-EA-K24 ships without a cylinder so a locksmith can fit the building's keyway. Order the 7281-EA-K24xK if you want it supplied with a 1-1/8 inch mortise cylinder.
9) What can the 7281 alarm's relay switch, and is it enough to drive a maglock or a remote horn?
The onboard relay is DPDT rated at 3 amps. Two independent form C sets gives you one for a local device and one for reporting back to the head end, and 3 amps covers typical low voltage sounders, relays and most single maglocks. Size anything heavier through an interposing relay.
10) What triggers the Dortronics 7281 timer, a door contact or the access control system?
Either. The module has both normally open and normally closed inputs, switched to power source ground to activate the relay. Timing starts when the normally closed trigger closes or the normally open trigger opens, so you can drive it from a standard door position switch, a strike shunt output, or an access panel relay.
11) Can a guard tell the door's status from across the lobby without the alarm sounding?
The tri-state LED on the plate gives status at a glance: green when the door is secure, amber while the door is unlocked or shunted, flashing amber on an authorized open, flashing red through the warning period before the alarm, and steady red once in alarm. That warning flash is the useful one, it tells someone the prop timer is about to expire while there is still time to close the door.
12) How does the Securitron DPA compare to the Dortronics 7281-EA for a card access opening?
Both the Securitron DPA and the Dortronics 7281-EA are door prop alarms for commercial openings. The 7281-EA is specified around integration: a DPDT relay rated at 3 amps, normally open and normally closed trigger inputs, a field adjustable 2 to 60 second door open time, manual reset by key switch, digital keypad or other momentary switch, and an optional request-to-exit push button on a double gang plate whose dry contact output is independent of the alarm electronics. If your design calls for a specific timing window, relay contacts back to the access panel, or a keyed shunt, the 7281-EA is the one detailed for that. The Securitron DPA is the alternative in the same door prop alarm family.
13) Is the Dortronics 7281 exit alarm suitable for a commercial building or is it a residential device?
It is a commercial door alarm, built as a low voltage access control accessory on a stainless steel wall plate rather than a consumer entry chime. Typical uses are stairwell and emergency egress doors, back of house exits and loading doors in offices, schools, hospitals and multi-family properties.
How fast can I get the Dortronics 7281-EA delivered?
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Can I return it if it doesn’t work for me?
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Does the Dortronics 7281-EA come with a warranty?
Absolutely. The Dortronics 7281-EA is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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