We sell 110V or 220V ozone generator kits for those electronically minded folks who want to save a few bucks and do it themselves. These kits include: Transformer, ozone plate(s), 120mm fan, and electrical cord. The plate on this kit does not have soldered wires. We don't want you to buy this kit unless you're an electrician or know what you're doing so NO INSTRUCTIONS are supplied. Those in the know will have no problem turning these kits into ozone generators however. Each comes with a 1 yr warranty on the transformer and fan and a 6 month warranty on the moisure resistant ozone element.