Returns may be accepted if authorized within 30 days of your purchase. After 30 days, returns sent without prior notification or approval may not be accepted. Refunds are subject to a minimum of 20% restocking fee plus any shipping charges on standard returns. An additional restocking fee is applied to items returned to us in any condition not identical to what was originally shipped. This fee is assessed to cover any service needed to restore the item to sellable condition, including cleaning and retesting. All return shipping costs will be paid by the original buyer, unless the return is due to a mistake on our part. Shipping and other fees are nonrefundable. Non-standard returns such as products that have been installed or energized, or special order items, may not be authorized for return or may be subject to a higher restocking fee.