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Can the Von Duprin Chexit device be changed to ALK exit alarm?
The Chexit device has a different base plate and center case than the ALK.  The Chexit device would need to be replaced with an ALK device.
Alk not power up - using 9V battery
There are three main failures with an ALK.  Problems are usually caused by a bad power source(battery), bad RX/LX Switch or a bad circuit board.  Try installing a new battery and wai...
The Von Duprin 98 or 99 ALK kit will not sound the horn
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...
What power supply replaces the Von Duprin 9VDC PS9 power supply?
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...
Why would an exit alarm ALK go into alarm and shut off after about 10 seconds?
If the spring on the Von Duprin exit alarm ALK board is not located correctly as shown on the instructions, then the vibration from the horn allows the cylinder to turn and shut the exit alarm ALK ...
What is the part number for the EAK PCB only for Monarch Falcon devices?
PCB only for the Alarm Kits prior to June 11th, 2012 is part #650335 and was used in the older 17 & 18 devices, 19, & pre June 2012 24/25's.
This circuit board will NOT work on the updated 24/25 Alarm Kits that released June 11th, 2012.
What could cause the Von Duprin exit alarm ALK to turn off after one or two minutes?
If the spring on the Von Duprin exit alarm ALK board is not located correctly as shown on the instructions, then the vibration from the horn allows the cylinder to turn and shut the exit alarm ALK ...