The AC-020 is a 500-user two-door access controller with two standard Wiegand 26-Bit reader interfaces for connecting two readers in an In/In configuration. For an integrated two-door solution, the unit powers two 12 VDC 1.2 A lock strikes and two request-to-exit (REX) inputs. With a user-friendly LED and sounder tone-based programming menu, and conveniently located terminal blocks, the AC-020 is quick and easy to install. Unique built-in features include: tamper detection, bell sounder, backup 12 V battery charger, and keypad (which can be used as a PIN reader). The unit supports multiple security mode levels and user levels.