Only needed for beds with "choke style" ballasts. You MUST first measure your own incoming voltage using a digital volt meter to insure you get the right type of buck or boost for your application. Every building is different. Most salons that have 208V/3 Phase service use the +24V or the +16V versions. Most home tanning bed owners that need one use the -12V versions. Verify before you buy, these are non-returnable. Call us at 1-800-274-1744 if you have any doubt as to what you need.
Due to the nature of electronic parts, they are NON-RETURNABLE and NON-REFUNDABLE. Because this is a drop-ship item, it is subject to different shipping charges. Please allow 2 to 3 weeks to ship, as these are made to order.