The 4800 PLC interlock controller from Dortronics Systems, Inc. controls up to five doors and features 12 field-assignable inputs and 12 configurable relay outputs, compatibility with leading access control software, a watchdog circuit that constantly monitors operation, LED input/output connection status indicators, voltage spike/surge kickback protection, and adjustable propped door, panic release and door relock timers. The controller is available as a board module or with a 4-amp power supply.

Find out more at GSX booth #714 or at