AtomicVette 0 Posted August 8, 2016 I have an eMerge 4000 I think at my office. I'm wanting to hook up a REX button at the front entrance however I'm not quite sure how to set it up on this system. I've Identified which ACM card is attached to the front door and I have access to the eMerge admin console. Now I need help on where exactly to connect the REX button to the ACM card and how to configure it in the console. Share this post Link to post Share on other sites