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“ alk wont reset ”

Resolution: 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

Resolution: 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...:

What power supply replaces the Von Duprin 9VDC PS9 power supply?

Resolution: 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...:

What is the part number for the EAK PCB only for Monarch Falcon devices?

Resolution: 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?

Resolution: 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 ...:

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