Is the 900 FA card required with the PS902 when operating the Von Duprin Chexit device?

No, since the Von Duprin Chexit has a fire alarm input connection, the 900 FA card is not required to be used in the Von Duprin power supply.  The yellow and red wire must be connected as a "closed" circuit back to the buildings' fire alarm relay.  

Please  contact product support at 877-288-7707,  option 2, then option 3 ,   for any questions related to your Chexit.

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