Von Duprin QEL78EO-F Fire-Rated Rim Exit Device with Quiet Electric Latch Retraction

Von Duprin QEL78EO-F Grade-1 Rim Exit Device, Wide Stile Pushpad, Fire Rated, Exit Only, Quiet Electric Latch Retraction

Quiet electric latch retraction (QEL) provides electronic control of an exit device for environments where limited operational noise is desired. These devices always provide mechanical egress. The electrified latch retraction can also be activated by an access system or building automation system to unlatch the exit device momentarily. Often the QEL is used with a credential reader and access control system to unlock the door momentarily for authorized users.

The QEL can also be configured to electronically retract the latch for an extended period of time to allow free entry. This is a convenient alternative to mechanical dogging.

The QEL option does not include the power transfer from door to frame, the power supply, or the control operator. Refer to EPT-2 power transfer and the PS902 or 914 power supply.

The 900 Series power supply with the 2RS, 4RL or 4R board is the minimum required. Other option boards available for other functions, see 900 Series power supply for additional information.

The QEL has a low in rush current, so it can be used with standard Schlage power supplies. Calculate the peak current draw of all devices in the system to determine the required amperage of the supply.

Fire-rated openings have several additional requirements. They must be self-latching and self-closing. To satisfy these requirements the QEL must be paired with an automatic operator and under the control of an automatic fire alarm system when used on fire-rated openings.

• EO = Exit Only, ANSI Function 01 (78 Series Outside Trim Sold Separately)
• Energy-efficient motorized latch retraction utilizes standard 2 amp power supply, enabling longer wire runs from power source
• Quiet operation in both mechanical and electronic states
• On-board installation and troubleshooting diagnostics built into device
• For use with single doors or double doors with mullions
• Deadlocking latchbolt standard
• Stock Sizes: 3′ (32-3/4″ actual width) and 4′ (45″ actual width) – can be cut to size in the field
• 299F Roller Strike Standard
• ANSI/BHMA Certified, Grade-1
• UL listed for panic exit hardware and fire exit hardware