Detex EAX-300 Surface Mounted Door Prop Alarm, Gray, Less Cylinder

The Detex EAX-300 series is a purpose-built solution to prevent doors from being propped or held open beyond a safe time interval. The unit mounts on the door or wall surface and uses an internal magnet and sensor to detect the door’s open condition. Once the door remains open longer than the set time (selectable from 1 second to 4 minutes, default 15 seconds) the alarm activates with a 100 dB alert.

Key Features:

• 100 dB piezo alarm gives strong audible deterrence for unauthorized door-propping.

• Field-selectable door-open delay from 1 second up to 4 minutes, so you can match the behavior to your traffic/use pattern.

• Operates on a standard 9 VDC battery (battery operated version) with low battery alert.

• Secure, tamper-resistant housing, with a tapered cover that allows for narrow-stile door installations.

• Intelligent circuit auto-detects magnet placement to set correct door handing (left/right) without manual adjustment.

• Cylinder sold separate, so you can integrate your preferred keyed access or keyed override functions.

• Grey finish (standard) with options for other finishes (such as black) for aesthetic match.

• Uses Standard 1-1/8" Mortise Cylinder, Sold Seperatly

Why this matters:

Doors that are held open pose issues ranging from energy loss to security and code compliance concerns. The EAX-300 helps ensure those doors remain secure and compliant by alerting when the door is left open too long. It’s ideal for entrances, lab doors, storage rooms, or any access point where the door should close and lock automatically without being propped open.