The A22K is ATRIUM's powerful Web-Based high security module. The flexibility of the A22K module allows it to be set either as a 2-door controller or expander (2 in 1). The A22K includes an embedded web server that combines performance and simplicity, enabling you to manage Users / Cards, lock or unlock doors, view and print system events and display controller information from any place in the world. Industry-unique and effortless card enrollment mode minimizes system start up and simplifies your life. A pre-assembled universal power supply is included with every A22K making this unit an industry leader in efficiency and simplicity.