Detex EAX-2500F / EAX-2500FK Gray — 100 dB Flush-Mount Exit Door Alarm and Complete Installation Kit Options. The Detex EAX-2500 Series is a professional AC/DC externally powered wall-mounted exit alarm for monitoring doors that should not be used without authorization. Its compact flush-mount gray alarm is designed for a standard 4 in × 4 in electrical box and emits an approximately 100 dB piezo alarm when the attached magnetic door contact signals that an armed door has opened. The product family offers standard alarm-only units, multiple factory-installed key-control configurations, and FK complete flush-mount kits that include a flush magnetic switch and 24VAC transformer.

Important: This is audible security monitoring only. The alarm does not prevent, lock, delay or impede emergency egress, and is not an EE delayed-egress device. Compatible exit hardware, door latching, door closer, power wiring and any fire-door requirements remain separate. Select the exact SKU below to receive the specified cylinder or kit components.

FK Complete Installation Kit — What Is Included

Select FK — Flush Kit (No Cylinder), FK IC7 — Flush Kit + IC7 Housing, or FK W-CYL KA — Flush Kit + Keyed-Alike Cylinder when a new hardwired installation needs the primary electrical and door-monitoring accessories bundled with the alarm. The factory FK package includes:

• Detex EAX-2500F Gray flush-mounted exit-alarm electronics and faceplate with approximately 100 dB piezo horn and key-operated alarm controls.
• 24VAC transformer for the approved alarm power arrangement, subject to correct field electrical installation.
• Flush magnetic door switch contact to detect opening of the monitored door when the system is armed.
• Manufacturer flush back box for the Detex-specified 4 in × 4 in rough-in.
• EA-561 emergency-exit alarm warning sign, standard English alarm signage.
• Standard manufacturer installation and mounting components according to the factory kit packing list.
• FK IC7 only: Factory-installed 7-pin interchangeable-core cylinder housing for the key-control function, less removable core and keys.
• FK W-CYL KA only: Factory-supplied keyed-alike conventional mortise cylinder; verify the facility's keying requirements with the supplier.

The standard FK kit does not include an operating mortise cylinder. The FK IC7 includes only the interchangeable-core housing, not the actual keyed core. The FK W-CYL KA adds a factory-supplied keyed-alike conventional mortise cylinder to the otherwise complete FK kit. Specify the correct 7-pin interchangeable-core profile, keyway, control key, and operating keys separately. A detachable 7-pin core should not be assumed interchangeable with a complete MC65 conventional mortise cylinder.

EAX-2500F Gray Standard Alarm — What's Included

The Standard, IC7, W-CYL KA, KS and MC65 models include the gray flush-mounted alarm, Detex-standard EA-561 warning sign and manufacturer back box, with the selected key-control option as indicated. These five non-FK versions do not bundle the magnetic door contact or transformer. They require separately supplied Detex-approved door contacts, hardwired power and field installation. Do not assume the pictured cylinder is supplied unless the chosen variant explicitly includes one.

Features and Benefits

• Detex EAX-2500 Series: Heavy-duty AC/DC external-powered wall-mounted exit alarm for commercial and institutional doors.
• Loud approximately 100 dB piezo output: Immediate audible warning when an armed monitored door is opened without authorization.
• Standard gray finish: Professional neutral gray housing that coordinates with commercial architectural door hardware.
• Flush-mount installation: Compact faceplate fits a standard 4 in × 4 in double-gang electrical back box.
• Hardwired alarm power: Suitable Detex-approved 12/24V AC/DC power arrangement; FK kits specifically include a compatible 24VAC transformer.
• Door magnetic contact activation: Door-opening signals start the audible alarm while armed; flush contact is included only on FK kits.
• Remote alarm signaling: Compatible remote relay output for monitoring or annunciation equipment.
• Remote bypass: Enables authorized bypass for security staff, building systems or approved controlled passage.
• Extended bypass function: When properly configured, accommodates controlled open-door periods and rearming after closure.
• Manual key reset / arming: An appropriate cylinder and key permit authorized arming, disarming and reset.
• KS key-stop option: Factory switch option retains the key unless the alarm is in the armed/on position; sold as its own variant.
• MC65 cylinder option: Factory-installed conventional mortise cylinder, different from IC7 interchangeable-core housing and from the W-CYL KA keying arrangement.
• IC7 housing option: Factory-installed seven-pin IC housing, removable core and keys sold separately, available in both alarm-only and FK kit models.
• Automatic rearming capability: Field-selectable two-minute automatic rearm, with additional extended-bypass/rearm settings depending on device programming.
• Silent arming and status options: Field-selectable status/arming settings according to Detex instructions.
• Low-backup-battery monitoring: Alarm status provisions support optional 9V battery backup; check the exact factory configuration because L9 removes backup.
• EA-561 warning sign: Included with the standard alarm and complete FK kits.
• Not delayed egress: Horn and monitoring features do not intentionally hold the door locked or delay emergency release.
• Suitable for high-use facilities: Commonly used in commercial buildings, schools, healthcare buildings, warehouses, institutions and security-sensitive exits.

Detailed Technical Specifications

Recommended Applications

• Commercial emergency exits: Audible alert for unauthorized door openings without restricting emergency exit.
• Schools, universities, hospitals and government facilities: Monitor egress doors where staff need a local warning.
• Warehouses and distribution centers: Loss prevention, shipping-area exit monitoring and restricted personnel-door alarms.
• Retail and public facilities: Alert security personnel when a door is opened outside authorized procedures.
• New full flush-mount installations: Choose FK when you need the compatible transformer and magnetic contact in the same order.
• Facilities standardizing keyed-alike cylinders: Choose FK W-CYL KA when a full alarm kit and keyed-alike mortise cylinder are both needed; confirm exact keying with the supplier.
• Facilities using a 7-pin interchangeable-core key system: Choose FK IC7 if the electrical kit and a factory-installed 7-pin IC housing are required; add a compatible removable core and keys.

What Is Not Included — Important Selection Notes

All variants: Door, commercial exit bar/lockset, electrical field wiring, central monitoring panel, extra security controls, installation labor and the separate Detex 102640 retrofit conversion plate are excluded unless expressly quoted. F without K: Flush magnetic contact and transformer are extra. FK (without IC7): A suitable operating mortise cylinder and keys must be ordered separately. FK IC7: The seven-pin IC housing is factory-installed, but its interchangeable core and keys are not included. FK W-CYL KA: Factory-supplied keyed-alike conventional mortise cylinder included, with exact keying to be confirmed. The magnetic contact and transformer ARE included in all three FK kit configurations. Confirm the exact 9V backup-battery option and the vendor packing list before installation.

Ordering and Installation Guidance

Model decoding: EAX-2500 = external-powered exit alarm; F = flush mount; FK = full flush-mount installation kit with flush magnetic door contact and 24VAC transformer; GRAY = standard gray; IC7 = factory 7-pin interchangeable-core housing (core not included); MC65 = complete factory mortise cylinder; W-CYL KA = keyed-alike conventional cylinder; KS = Key Stop. Coordinate compatible transformer wiring, door-contact placement, mortise cylinder or interchangeable core, facility keying, and any remote relay/bypass input. Do not assume IC7 includes the physical keying core. Confirm Detex installation instructions, alarm test and free egress requirements with the site installer. Shipping weights are preliminary estimates only and should be replaced with actual sealed-carton values before fulfilling UPS orders.