eMerge Elite-36 4-door system, up to 20,000 cardholders with up to 80,000 cards, up to 8 readers, browser-based management via embedded Web server, upgradable up to 36 doors and 72 readers with license keys and plug-in modules or expansion nodes, easy setup wizard, optional PoE power with E3-POE module, housed in a locking metal cabinet with integrated tamper switch.