can QEL be connected with ALK

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No, Von Duprin exit alarm ALK and electric latch retraction QEL or EL are installed in the same location and can't be ordered together with the same device.
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...
SD is Special cylinder dogging in the center case of 98/99 rim and vertical rod non fire rated devices and is available with standard, EL, QEL, CX and ALK.
Followings are the reason for 98/99 exit alarm ALK not sound when push bar is activated. Make sure key switch on exit alarm ALK is turned on, wait for 20 seconds before you activating the pushba...
The following may cause the ALK to go into alarm: Make sure red and blue wires on the RX switch are connected to the exit alarm ALK terminal block and yellow wire is taped off. Check the red an...
Yes, the QEL device includes a cable assembly part number 110388-00.Since 12/2014, that cable comes in a package (part 116549) with the long cable mentioned above and the small cable that plug...
The PS9 power supply was discontinued.  The new exit alarm ALK can either use a 9VDC battery or 24VDC regulated power supply. There is no direct replacement for Von Duprin PS9 power supply. Cur...