Dortronics Systems, Inc. is a U.S. manufacturer of standard and customized access control products and locking hardware devices. Our Division 8 (Electrified Door Hardware) products include electric strikes, maglocks, panic bars, key switches, pushbutton controls, delayed egress systems and door-prop alarms. Our Division 28 (Electronic Access Control) Door Interlock Controllers will control sequencing of two, to as many as 128 doors on a single controller. Applications include Mantraps, Airlocks, Sallyports and Secured Vestibules.