/community-hubs/deltav-community-connect/b/delta-vweblog/posts/optek-danulat-gmbh-c-hc4xxx-c8xxx-rev-1-ff-deltav-8-4-interoperability-testIn Emerson’s continuing commitment to open and interoperable standards, the optek-Danulat GmbH C_HC4xxx/C8xxx Rev 1 has passed the rigorous and comprehensive testing of the DeltaV Stress Test labs. Using the Device Installation Kits for Emerson Productsen-USTelligent Community 13