Two simple inverters - input voltage and get an inverted version (+5v envelopes become -5v envelopes etc.) Each inverter has a second output (curiously labeled IN) you can use it as a "thru out" - sparing you a mult!

Note: This is a used module. It may exhibit minor signs of wear such as rack rash but is fully functional. This module will include M3 screws, ribbon cable, and a box, but not the original box.