Buck/Boost Transformer with premolded plug and receptacle. Unlike traditional transformers, you don't have to wire this one. It is designed to plug any 15 or 20 amp tanning bed in (NEMA 6-15 or 6-20) and you just plug it into your dedicated circuit (NEMA 6-20). PLEASE NOTE: Your actually running voltage will be LESS than this measured voltage using a digital volt meter because voltage usually drops a small amount under load. We recommend that you buy a buckboost transformer with the goal of achieving 130 to 135VAC using your unloaded measurement for best performance. This unit will lower the incoming voltage by approximately 24 volts AC. For most tanning beds that need 230v, this is the correct transformer if your incoming voltage (as measured using a digital volt meter) is 260 to 270VAC. This is a very rarely used transformer, as no service in the US requires this large a drop in voltage. Availability: Usually ships the next business day. bb20-24down$159.99 Did you know that we started in 1985, and went online in 1997, several years before any current reseller? No one has more experience or more products than TanningBeds4Less.com. We still have the ONLY Money Back Guarantee in the industry, and our SunMaster beds are 100% built right here in America. Trust us for all your tanning bed, lotion and tanning lamp needs. Your satisfaction is guaranteed.