It seems that the product is defective. How can I return it? Follow Sandra Portmann (mmag / Global Sales Support) February 10, 2020 20:33 Updated The respective subsidiary or sales partner will be happy to help you. Please check the contact information of the local contact. Related articles Warranty Measures for an EMC consistent installation What information is required by Support? I need personal support. Where do I get that realtime? EPOS4: Rules and Hints for the implementation of a RS232 / UART protocol driver Comments 0 comments Article is closed for comments.