Call 888-257-4406 and request an "RMA" (return materiel authorization). Once you are given this number, package up the item in its original packaging with all manuals, cords, etc. that came with it.
Important: Write the RMA number on the outside of the package. Then send it to:
Returns HomeTech Solutions 10600 S De Anza Blvd Cupertino CA 95014