The D4-440 is a discontinued CPU module featuring 15.5K words ladder memory, equipped with both RS-232 and RS-232/RS-422 communication ports, operating at 120-240 VAC.
The D4-440 is a discontinued CPU module featuring 15.5K words ladder memory, equipped with both RS-232 and RS-232/RS-422 communication ports, operating at 120-240 VAC.