Members have the right to use the SERCOS interface® trademark in literature, in their promotion, and on SERCOS interface products that have passed a conformance test. Non-members must pay ¼ of the regular yearly membership fee for this right. Note that the trademarked SERCOS interface name does not appear in the IEC 61491 standard, so a product developed to that standard does not necessarily have the right to be designated a SERCOS interface product. A product must pass a conformance test before the SERCOS interface logo can be used on that product. Members receive a 30% (approximate) price reduction (compared to non-member price) on conformance testing of SERCOS interface devices. In addition, SERCOS Association members receive no-charge issuance of certification of SERCOS interface products after they pass the conformance tests. Non-members are charged 500 EURO per device for issuance of a certificate. Conformance test tools are available to members at a reduced price. Members receive access to preliminary SERCOS interface technical updates produced by the Technical Working Groups. Non-members cannot obtain this information until it is released and published for sale. Published, released updates to the specification, technical manuals and other documents are available for purchase by non-members; they are free to members. Members may participate in Technical Working Groups (TWG) which determines updates and enhancements to the SERCOS interface specification. Members participate in meetings (North America, Europe, Japan) for exchange of technical data and association business issues. Members receive no-charge listings on the SERCOS website, in various promotions, product guides and in trade shows. Members have access to association information databases. Members participate in the SERCOS interface booth at trade shows and exhibitions (Hannover Fair, for instance) at cost. Non-members pay 50% additional. Members receive up to 50% attendance fee reduction at SERCOS-sponsored presentations and seminars.