Exterior Door Alarmed REX Electrified Exit Device Application

Secure your building’s most critical access points with our Exterior Door Alarmed REX Electrified Exit Device Applications. This comprehensive security configuration integrates a professional electrified panic bar with an internal Request to Exit (REX) switch, a Door Position Switch (DPS), and a local high-decibel alarm. By pairing these components with an exterior keypad, card reader, or mortise key switch, you create a monitored perimeter that alerts staff instantly to forced entries or propped doors while maintaining a seamless, audited entry for authorized personnel.

System Operation: 

This application uses a multi-layered logic to monitor the door's physical state and distinguish between authorized use and security threats. 

• The door is normally closed and latched.
• Egress is permitted by key pad, card reader, or key switch by deactivating the alarm, just passing thru the door will cause the alarm to sound.
• Door can be opened from exterior by access control keypad, card reader.
• If the door is not reclosed and re-latched, the alarm will sound.
• If the door is holed or forced open the alarm will sound.

System Summary:

• Secured State: The electrified exit device is latched, and the door is monitored by a Door Position Switch (DPS). The system is "Armed."
• Authorized Entry: A user presents a credential to the exterior card reader, keypad, or turns the mortise key switch. This momentarily shunts the alarm and retracts the latch or unlocks the lever.
• Monitored Egress (REX): When an occupant exits from the inside, the internal REX switch detects the push bar movement and notifies the system to allow the door to open without triggering the alarm.
• Forced Door Alarm: If the door is opened without a valid REX signal or exterior credential, the local high-decibel alarm sounds immediately to alert nearby security.
• Door Propped Alert: If the door remains open past a programmed duration (detected by the DPS), the alarm sounds to ensure the perimeter is not left vulnerable.
• Emergency Release: The mechanical push bar always allows for immediate egress, and the system is tied to the fire alarm to drop all electronic locks during an emergency.