EL and ALK


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.
It is not possible for an exit device to have an EL/QEL component and an exit alarm.  There is not enough room in the device to house both items.
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.
The new exit alarm ALK uses the 24VDC regulated PS902 power supply.
The part number for Von Duprin exit alarm ALK board is 101030-00.