new qel versus old qel

RELATED FAQS

Question
Answer
The new QEL motor has a label affixed to the cover, the older QEL motor has no such label.  See attached image.
You can use the QEL+ device with 900-2Q option board. The 900-2Q board is obsolete with no stock remaining.   
Current EL and QEL baseplate conversion kits can be used on all latching types of the 33/35 series (non "A" version which were manufactured prior to 2003).  At one time, the obsolete black EL ...
This is available.  You will need the SD center case kit, SD center case cover, SD cylinder dog housing, and EL/QEL conversion kit.
The Von Duprin EL33A/35A/98/99 device can be converted to the QEL device by getting the correct sized QEL baseplate conversion kit. The existing PS914 or PS873 power supply can be used. ...
QELA is the third generation of the Von Duprin QEL motor that began shipping at the end of 2014.  It is what is currently shipped (as of 2021).  The letter "A" was used to distinguish whi...
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...
This must not be done on a fire rated opening. From a wiring standpoint, wiring the fire alarm signal as an input to a power supply  logic board (using it as an access control input) wou...