Please call our Customer Service/Technical Support Department at 1-800-996-6696 for technical assistance, phone orders, or volume pricing, Mon.-Fri., 8 a.m.- 4 p.m. Eastern Time. You may also fax your order to our 24 hour fax line at 908-996-7773. We accept most major domestic credit cards. Orders are non-cancellable, non-returnable. All units come with a 10 year warranty.