“We developed our 4800 Series controllers to meet the tremendous growth in the market for interlocking doors for some time now,” said Bryan Sanderford, National Sales Manager, Dortronics Systems, Inc. “Additionally, we’ve designed the solution to offer users flexibility with door configuration and other advanced features typically found only in more costly and complex controllers.”

The 4800 Series features twelve field assignable inputs and seventeen configurable relay outputs for maximum flexibility. The new auxiliary relay lock output accessory adds to this flexibility with up to five factory installable accessory terminal blocks. When form C contacts are required for additional functionality the auxiliary terminal boards can be specified on the purchase order and installed prior to shipment. These give the option of additional normally open or normally closed terminals with the 4800 Series controller.

Additional design features include a unique watchdog circuit that constantly monitors operation; LED indicators for input-output connection status; voltage spike and surge protection on all outputs; and adjustable propped door, panic release and door unlock timers. The 4800 Series is available as a board only module or complete with a heavy duty 4-amp power supply.