alk external inhibit

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Current exit alarm ALK released in November 2010 does ship standard with an EI (external inhibit) option.  ALK shipped prior to this would only have EI if ordered as a Special option.
The current Von Duprin ALK comes standard with the External Inhibit feature.
For Chexit devices shipped after 8-24-2015 with motor driven connect your normally closed contact from access control system between green and red on the twelve field wire ...
Chexit devices shipped prior to 8-24-2015 with solenoid driven: A normally closed card reader contact, key pad contact or any other control contact connects to the Green an...
A Chexit device could arm when the door is open but door may not close to secure the door unless a Door Position Switch (DPS) is connected to the device then the device goes into alarm after rearm ...