LV-Transformer is an Industrial Craft 2 wiring block that converts EU (the mod's energy unit) between two power tiers: step-down mode takes 128 EU/t in and puts 32 EU/t out, while step-up mode takes 32 EU/t in and puts 128 EU/t out. One LV-Transformer is crafted from six Oak Planks, two Tin Cable, and one Coil in a shaped recipe on the crafting table. When placed, LV-Transformer points its higher-voltage face — the side marked with five dots — toward the player, and the five remaining single-dot faces carry the lower voltage. Without a redstone signal LV-Transformer runs in step-down mode, and the GUI offers three settings: Redstone = step-up (the default), fixed step-down, and fixed step-up.

Industrial Craft 2 names every transformer after its lower default output voltage, and LV-Transformer covers the 32 EU/t tier. Setting the GUI mode deliberately matters because an errant redstone signal can flip a wrongly configured LV-Transformer into explosive problems. LV-Transformer also keeps a small internal EU buffer that the GUI does not display, so a supposedly dead wire can still hold a charge. To reorient LV-Transformer, right-click the chosen face with a wrench to assign higher voltage there, or shift-right-click to set the opposite face; removal takes a wrench on the five-dot face or a shift-wrench on the face opposite.