Following the introduction of Universal Controller parts for the Basic Controller, Honeywell introduced this limited version of the original Hiway processor card.

This processor will not work in the Basic Controller, but was intended for service in the following boxes: HLPIU, LLPIU, LEPIU, RCD, OP Station.

The original, unconstrained version of this processor, the 30731832-001, is still available from WPC, and can be used in the Basic Controller in addition to the boxes listed above.