This unit has an internal switching supply that isolates supply power from the internal power
and I/O. Units will operate correctly when powered by 12-24 VAC or 10-32 VDC. The unit is
equipped with full wave rectification, so power may be applied between Pins 1 & 2 using either
The package for this unit consists of a solid epoxy block. The internal electronics are assembled and tested before the encapsulation process. During the encapsulation the printed circuit board(s) are placed in a five sided box made of RTV mold parts. The cavity is filled with epoxy and the lid (top) of the mold is inserted. The curing process takes 24 hours. This type of package seals the electronics so water and contamination cannot affect the internal electronics. This type of package also provides superior resistance to shock and vibration compared to a metal or plastic box enclosure.