difference between QEL & EL function

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You can not use these options together on the same device per the following reasons: QEL/EL device retracts the latch bolt of the exit device allowing entry. CX (Chexit) device ...
EL is Electric latch retraction and retract the latch bolt into the exit device center case.  E references the electric unlocking of the Pull Side trim for a Panic Device.   With the E function, th...
Application is based on how the door will be used.   Please contact Product Support at 877-671-7011 to discuss your application and select the correct device for your opening.
The Von Duprin PS914-2RS retracts the EL or QEL device approximately 200 times with five second hold time after each pull.
The 900-2RS is recommended to be used with EL devices but if you have a 900-2Q with PS914 power supply it can be used to operate up to two EL or one EL and one QEL devices .
Product Ordered after 7/10/2012 - Product identified by label on QEL motor You no longer need to use the 900-2Q option board (no longer available) with the PS900 power supplies to ...
Product Ordered before 7/10/2012 - Product identified by no label on QEL motor. You must use the 900-2Q option board with the PS900 power supplies to operate the QEL devices.  The attached ta...
The old MPB842 power supply will power up to two EL electric panic bars but will not power the QEL devices.  A defective potted module inside the electric panic bar or defective power supply coul...
The attached table shows the part numbers for LX-RX and LX-RX-LC switches field installed.
  Pushing on the push  bar or activating the EL/QEL or the trim on Von Duprin XP98/99 exit device does not retract the latch, it releases the latch only. Door must be pushed or pulled when device o...
This is available.  You will need the SD center case kit, SD center case cover, SD cylinder dog housing, and EL/QEL conversion kit.