NRT305 interfaces input/output cards GPO – GPI with computers boards.

It delivers a 12V supply to feed the specific remote controls.This voltage also supplies input optocouplers on input/output boards, allowing to use dry loop or open collector.

Two identical groups each with a 37 pins Sub D, dispatched on inputs/ouputs, sending inputs to a 25 pins female Sub D and outputs to a 25 pins male Sub D.