At SIGMA, our goal is to ensure your complete satisfaction with your purchase. If, for any reason you are dissatisfied with your purchase, you can return it to SIGMA within 15 days of receipt of the item(s).

You have the option of exchanging the item(s) or receiving a refund for the full amount of the original purchase price. If the payment was made by credit card, once we receive the product we will credit your account.


In order to return or exchange an item(s), please download the Return Merchandise Authorization Form and include it with the return along with the copy of the original invoice.

Returns must be made within 15 days of receipt of item.

Returned products must be in brand new condition and must have all original manufacturers packing materials and accessories, including instruction booklets and packing inserts and blank warranty cards.

Ship the parcel back to us freight prepaid. We do not accept COD or freight collect shipments. We recommend a shipping method that provides tracking insurance.

Ship to:

Sigma Corporation of America
Order Dept.
15 Fleetwood Ct.
Ronkonkoma, NY 11779